/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:38:36,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:38:36,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:38:36,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 03:38:36,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 03:38:36,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 03:38:36,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 03:38:36,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 03:38:36,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:38:36,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:38:36,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:38:36,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:38:36,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:38:36,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:38:36,740 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:38:36,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:38:36,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:38:36,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:38:36,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:38:36,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:38:36,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:38:36,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:38:36,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:38:36,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:38:36,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:38:36,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:38:36,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:38:37,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:38:37,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:38:37,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:38:37,084 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 03:38:37,086 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 03:38:37,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-06-05 03:38:37,087 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-06-05 03:38:37,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:38:37,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 03:38:37,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:38:37,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:38:37,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:38:37,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:38:37,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:38:37,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:38:37,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:38:37,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... [2021-06-05 03:38:37,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:38:37,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:38:37,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:38:37,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:38:37,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:38:37,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-05 03:38:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-05 03:38:37,230 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-05 03:38:37,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-05 03:38:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-05 03:38:37,230 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-05 03:38:37,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-05 03:38:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-05 03:38:37,231 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-05 03:38:37,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-05 03:38:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-05 03:38:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-05 03:38:37,233 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-05 03:38:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-05 03:38:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-05 03:38:37,233 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 03:38:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:38:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:38:37,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-05 03:38:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-05 03:38:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-05 03:38:37,236 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 03:38:37,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:38:37,361 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 03:38:37,363 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:38:37 BoogieIcfgContainer [2021-06-05 03:38:37,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:38:37,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:38:37,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:38:37,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:38:37,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:37" (1/2) ... [2021-06-05 03:38:37,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c853f1 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:38:37, skipping insertion in model container [2021-06-05 03:38:37,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:38:37" (2/2) ... [2021-06-05 03:38:37,369 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-06-05 03:38:37,374 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:38:37,374 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:38:37,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:38:37,375 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:38:37,457 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-06-05 03:38:37,474 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-05 03:38:37,489 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:38:37,490 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:38:37,490 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:38:37,490 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:38:37,490 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:38:37,490 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:38:37,490 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:38:37,490 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:38:37,513 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 264 flow [2021-06-05 03:38:37,951 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:38,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:38,020 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:38,021 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:38,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1175608463, now seen corresponding path program 1 times [2021-06-05 03:38:38,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:38,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409756688] [2021-06-05 03:38:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:38,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:38,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409756688] [2021-06-05 03:38:38,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409756688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:38,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:38,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654391760] [2021-06-05 03:38:38,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:38,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:38,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:38,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:38,261 INFO L87 Difference]: Start difference. First operand has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:38,363 INFO L93 Difference]: Finished difference Result 3545 states and 15330 transitions. [2021-06-05 03:38:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:38,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:38,421 INFO L225 Difference]: With dead ends: 3545 [2021-06-05 03:38:38,422 INFO L226 Difference]: Without dead ends: 3543 [2021-06-05 03:38:38,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-06-05 03:38:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-06-05 03:38:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 4.327498588368154) internal successors, (15328), 3542 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2021-06-05 03:38:38,684 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2021-06-05 03:38:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:38,685 INFO L482 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2021-06-05 03:38:38,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2021-06-05 03:38:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:38,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:38,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:38,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:38:38,699 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:38,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1563685681, now seen corresponding path program 1 times [2021-06-05 03:38:38,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:38,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169545287] [2021-06-05 03:38:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:38,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:38,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169545287] [2021-06-05 03:38:38,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169545287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:38,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:38,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:38,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013331357] [2021-06-05 03:38:38,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:38,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:38,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:38,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:38,729 INFO L87 Difference]: Start difference. First operand 3543 states and 15328 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:38,769 INFO L93 Difference]: Finished difference Result 2709 states and 11545 transitions. [2021-06-05 03:38:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:38,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:38,791 INFO L225 Difference]: With dead ends: 2709 [2021-06-05 03:38:38,791 INFO L226 Difference]: Without dead ends: 2709 [2021-06-05 03:38:38,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:38,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2021-06-05 03:38:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2709. [2021-06-05 03:38:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2709 states, 2708 states have (on average 4.263293943870015) internal successors, (11545), 2708 states have internal predecessors, (11545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2709 states to 2709 states and 11545 transitions. [2021-06-05 03:38:38,957 INFO L78 Accepts]: Start accepts. Automaton has 2709 states and 11545 transitions. Word has length 25 [2021-06-05 03:38:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:38,958 INFO L482 AbstractCegarLoop]: Abstraction has 2709 states and 11545 transitions. [2021-06-05 03:38:38,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2709 states and 11545 transitions. [2021-06-05 03:38:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:39,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:39,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:39,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:38:39,016 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash -817162979, now seen corresponding path program 1 times [2021-06-05 03:38:39,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:39,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425752557] [2021-06-05 03:38:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:39,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:39,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425752557] [2021-06-05 03:38:39,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425752557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:39,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:39,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:39,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276208985] [2021-06-05 03:38:39,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:39,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:39,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:39,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:39,040 INFO L87 Difference]: Start difference. First operand 2709 states and 11545 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:39,083 INFO L93 Difference]: Finished difference Result 2106 states and 8830 transitions. [2021-06-05 03:38:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:39,099 INFO L225 Difference]: With dead ends: 2106 [2021-06-05 03:38:39,100 INFO L226 Difference]: Without dead ends: 2106 [2021-06-05 03:38:39,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-06-05 03:38:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-06-05 03:38:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 4.194774346793349) internal successors, (8830), 2105 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2021-06-05 03:38:39,203 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2021-06-05 03:38:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:39,203 INFO L482 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2021-06-05 03:38:39,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2021-06-05 03:38:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:39,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:39,210 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:39,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 03:38:39,210 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:39,211 INFO L82 PathProgramCache]: Analyzing trace with hash -407784791, now seen corresponding path program 1 times [2021-06-05 03:38:39,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:39,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784386408] [2021-06-05 03:38:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:39,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:39,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784386408] [2021-06-05 03:38:39,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784386408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:39,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:39,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:39,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123307997] [2021-06-05 03:38:39,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:39,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:39,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:39,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:39,259 INFO L87 Difference]: Start difference. First operand 2106 states and 8830 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:39,284 INFO L93 Difference]: Finished difference Result 1863 states and 7615 transitions. [2021-06-05 03:38:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:39,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:39,298 INFO L225 Difference]: With dead ends: 1863 [2021-06-05 03:38:39,298 INFO L226 Difference]: Without dead ends: 1863 [2021-06-05 03:38:39,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-06-05 03:38:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2021-06-05 03:38:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.08968850698174) internal successors, (7615), 1862 states have internal predecessors, (7615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2021-06-05 03:38:39,395 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2021-06-05 03:38:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:39,395 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2021-06-05 03:38:39,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2021-06-05 03:38:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:39,401 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:39,402 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:39,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 03:38:39,402 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:39,402 INFO L82 PathProgramCache]: Analyzing trace with hash 447521863, now seen corresponding path program 1 times [2021-06-05 03:38:39,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:39,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228350644] [2021-06-05 03:38:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:39,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:39,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228350644] [2021-06-05 03:38:39,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228350644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:39,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:39,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:39,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956149168] [2021-06-05 03:38:39,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:39,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:39,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:39,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:39,448 INFO L87 Difference]: Start difference. First operand 1863 states and 7615 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:39,470 INFO L93 Difference]: Finished difference Result 1458 states and 5833 transitions. [2021-06-05 03:38:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:39,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:39,496 INFO L225 Difference]: With dead ends: 1458 [2021-06-05 03:38:39,497 INFO L226 Difference]: Without dead ends: 1458 [2021-06-05 03:38:39,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-06-05 03:38:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2021-06-05 03:38:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 4.003431708991077) internal successors, (5833), 1457 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5833 transitions. [2021-06-05 03:38:39,562 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5833 transitions. Word has length 25 [2021-06-05 03:38:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:39,562 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5833 transitions. [2021-06-05 03:38:39,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5833 transitions. [2021-06-05 03:38:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:39,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:39,600 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:39,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 03:38:39,600 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:39,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:39,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1957625315, now seen corresponding path program 1 times [2021-06-05 03:38:39,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:39,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832572752] [2021-06-05 03:38:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:39,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:39,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832572752] [2021-06-05 03:38:39,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832572752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:39,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:39,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:39,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947319841] [2021-06-05 03:38:39,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:39,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:39,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:39,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:39,947 INFO L87 Difference]: Start difference. First operand 1458 states and 5833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:40,099 INFO L93 Difference]: Finished difference Result 3167 states and 11759 transitions. [2021-06-05 03:38:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:40,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:40,112 INFO L225 Difference]: With dead ends: 3167 [2021-06-05 03:38:40,112 INFO L226 Difference]: Without dead ends: 3008 [2021-06-05 03:38:40,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-06-05 03:38:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1530. [2021-06-05 03:38:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.998037933289732) internal successors, (6113), 1529 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6113 transitions. [2021-06-05 03:38:40,218 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6113 transitions. Word has length 25 [2021-06-05 03:38:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:40,219 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 6113 transitions. [2021-06-05 03:38:40,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6113 transitions. [2021-06-05 03:38:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:40,224 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:40,224 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:40,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 03:38:40,225 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1329043997, now seen corresponding path program 2 times [2021-06-05 03:38:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:40,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493900549] [2021-06-05 03:38:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:40,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:40,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493900549] [2021-06-05 03:38:40,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493900549] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:40,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:40,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:40,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204377511] [2021-06-05 03:38:40,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:40,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:40,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:40,447 INFO L87 Difference]: Start difference. First operand 1530 states and 6113 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:40,554 INFO L93 Difference]: Finished difference Result 3230 states and 11966 transitions. [2021-06-05 03:38:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:40,566 INFO L225 Difference]: With dead ends: 3230 [2021-06-05 03:38:40,566 INFO L226 Difference]: Without dead ends: 2976 [2021-06-05 03:38:40,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-06-05 03:38:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1498. [2021-06-05 03:38:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.997995991983968) internal successors, (5985), 1497 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5985 transitions. [2021-06-05 03:38:40,655 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5985 transitions. Word has length 25 [2021-06-05 03:38:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:40,655 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5985 transitions. [2021-06-05 03:38:40,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5985 transitions. [2021-06-05 03:38:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:40,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:40,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:40,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 03:38:40,661 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1919010631, now seen corresponding path program 3 times [2021-06-05 03:38:40,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:40,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698577030] [2021-06-05 03:38:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:40,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:40,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698577030] [2021-06-05 03:38:40,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698577030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:40,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:40,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:40,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909024665] [2021-06-05 03:38:40,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:40,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:40,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:40,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:40,858 INFO L87 Difference]: Start difference. First operand 1498 states and 5985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:40,940 INFO L93 Difference]: Finished difference Result 3118 states and 11565 transitions. [2021-06-05 03:38:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:40,952 INFO L225 Difference]: With dead ends: 3118 [2021-06-05 03:38:40,953 INFO L226 Difference]: Without dead ends: 2959 [2021-06-05 03:38:40,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2021-06-05 03:38:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1514. [2021-06-05 03:38:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.9874421678783873) internal successors, (6033), 1513 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6033 transitions. [2021-06-05 03:38:41,059 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6033 transitions. Word has length 25 [2021-06-05 03:38:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:41,059 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6033 transitions. [2021-06-05 03:38:41,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6033 transitions. [2021-06-05 03:38:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:41,064 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:41,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:41,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 03:38:41,064 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash 786021915, now seen corresponding path program 4 times [2021-06-05 03:38:41,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:41,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119773518] [2021-06-05 03:38:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:41,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:41,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119773518] [2021-06-05 03:38:41,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119773518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:41,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:41,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:41,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730569450] [2021-06-05 03:38:41,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:41,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:41,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:41,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:41,248 INFO L87 Difference]: Start difference. First operand 1514 states and 6033 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:41,334 INFO L93 Difference]: Finished difference Result 3148 states and 11658 transitions. [2021-06-05 03:38:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:41,345 INFO L225 Difference]: With dead ends: 3148 [2021-06-05 03:38:41,345 INFO L226 Difference]: Without dead ends: 2943 [2021-06-05 03:38:41,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-06-05 03:38:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1498. [2021-06-05 03:38:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9926519706078825) internal successors, (5977), 1497 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5977 transitions. [2021-06-05 03:38:41,428 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5977 transitions. Word has length 25 [2021-06-05 03:38:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:41,429 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5977 transitions. [2021-06-05 03:38:41,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5977 transitions. [2021-06-05 03:38:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:41,436 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:41,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:41,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 03:38:41,436 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 147858429, now seen corresponding path program 5 times [2021-06-05 03:38:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:41,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80405904] [2021-06-05 03:38:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:41,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:41,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80405904] [2021-06-05 03:38:41,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80405904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:41,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:41,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:41,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573621486] [2021-06-05 03:38:41,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:41,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:41,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:41,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:41,612 INFO L87 Difference]: Start difference. First operand 1498 states and 5977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:41,702 INFO L93 Difference]: Finished difference Result 3258 states and 12063 transitions. [2021-06-05 03:38:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:41,716 INFO L225 Difference]: With dead ends: 3258 [2021-06-05 03:38:41,716 INFO L226 Difference]: Without dead ends: 3069 [2021-06-05 03:38:41,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-06-05 03:38:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1561. [2021-06-05 03:38:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 3.9641025641025642) internal successors, (6184), 1560 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 6184 transitions. [2021-06-05 03:38:41,811 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 6184 transitions. Word has length 25 [2021-06-05 03:38:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:41,811 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 6184 transitions. [2021-06-05 03:38:41,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 6184 transitions. [2021-06-05 03:38:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:41,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:41,817 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:41,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 03:38:41,817 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 445911387, now seen corresponding path program 6 times [2021-06-05 03:38:41,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:41,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677359751] [2021-06-05 03:38:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:41,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:41,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677359751] [2021-06-05 03:38:41,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677359751] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:41,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:41,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:41,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868989892] [2021-06-05 03:38:41,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:41,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:41,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:41,972 INFO L87 Difference]: Start difference. First operand 1561 states and 6184 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:42,044 INFO L93 Difference]: Finished difference Result 3291 states and 12146 transitions. [2021-06-05 03:38:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:42,055 INFO L225 Difference]: With dead ends: 3291 [2021-06-05 03:38:42,055 INFO L226 Difference]: Without dead ends: 2982 [2021-06-05 03:38:42,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-06-05 03:38:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1474. [2021-06-05 03:38:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9979633401221997) internal successors, (5889), 1473 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5889 transitions. [2021-06-05 03:38:42,127 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5889 transitions. Word has length 25 [2021-06-05 03:38:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:42,127 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5889 transitions. [2021-06-05 03:38:42,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5889 transitions. [2021-06-05 03:38:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:42,131 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:42,131 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:42,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 03:38:42,131 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:42,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:42,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1934855229, now seen corresponding path program 7 times [2021-06-05 03:38:42,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:42,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689454168] [2021-06-05 03:38:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:42,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:42,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689454168] [2021-06-05 03:38:42,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689454168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:42,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:42,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:42,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035755634] [2021-06-05 03:38:42,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:42,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:42,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:42,265 INFO L87 Difference]: Start difference. First operand 1474 states and 5889 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:42,342 INFO L93 Difference]: Finished difference Result 3140 states and 11663 transitions. [2021-06-05 03:38:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:42,353 INFO L225 Difference]: With dead ends: 3140 [2021-06-05 03:38:42,353 INFO L226 Difference]: Without dead ends: 2981 [2021-06-05 03:38:42,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-06-05 03:38:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1522. [2021-06-05 03:38:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.992767915844839) internal successors, (6073), 1521 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 6073 transitions. [2021-06-05 03:38:42,428 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 6073 transitions. Word has length 25 [2021-06-05 03:38:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:42,428 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 6073 transitions. [2021-06-05 03:38:42,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 6073 transitions. [2021-06-05 03:38:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:42,433 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:42,433 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:42,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 03:38:42,434 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:42,434 INFO L82 PathProgramCache]: Analyzing trace with hash 926557245, now seen corresponding path program 8 times [2021-06-05 03:38:42,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:42,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921148606] [2021-06-05 03:38:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:42,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:42,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921148606] [2021-06-05 03:38:42,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921148606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:42,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:42,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:42,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344144969] [2021-06-05 03:38:42,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:42,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:42,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:42,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:42,587 INFO L87 Difference]: Start difference. First operand 1522 states and 6073 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:42,670 INFO L93 Difference]: Finished difference Result 3203 states and 11870 transitions. [2021-06-05 03:38:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:42,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:42,681 INFO L225 Difference]: With dead ends: 3203 [2021-06-05 03:38:42,682 INFO L226 Difference]: Without dead ends: 2949 [2021-06-05 03:38:42,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2021-06-05 03:38:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1490. [2021-06-05 03:38:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.992612491605104) internal successors, (5945), 1489 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5945 transitions. [2021-06-05 03:38:42,785 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5945 transitions. Word has length 25 [2021-06-05 03:38:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:42,785 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5945 transitions. [2021-06-05 03:38:42,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5945 transitions. [2021-06-05 03:38:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:42,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:42,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:42,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 03:38:42,792 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1371078561, now seen corresponding path program 9 times [2021-06-05 03:38:42,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:42,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033378481] [2021-06-05 03:38:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:42,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:42,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033378481] [2021-06-05 03:38:42,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033378481] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:42,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:42,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:42,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689940270] [2021-06-05 03:38:42,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:42,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:42,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:42,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:42,974 INFO L87 Difference]: Start difference. First operand 1490 states and 5945 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:43,077 INFO L93 Difference]: Finished difference Result 3089 states and 11464 transitions. [2021-06-05 03:38:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:43,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:43,101 INFO L225 Difference]: With dead ends: 3089 [2021-06-05 03:38:43,102 INFO L226 Difference]: Without dead ends: 2930 [2021-06-05 03:38:43,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-06-05 03:38:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1506. [2021-06-05 03:38:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9820598006644516) internal successors, (5993), 1505 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5993 transitions. [2021-06-05 03:38:43,209 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5993 transitions. Word has length 25 [2021-06-05 03:38:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:43,210 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5993 transitions. [2021-06-05 03:38:43,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5993 transitions. [2021-06-05 03:38:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:43,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:43,214 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:43,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 03:38:43,214 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -362780577, now seen corresponding path program 10 times [2021-06-05 03:38:43,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:43,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049191226] [2021-06-05 03:38:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:43,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:43,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049191226] [2021-06-05 03:38:43,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049191226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:43,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:43,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:43,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548820928] [2021-06-05 03:38:43,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:43,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:43,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:43,402 INFO L87 Difference]: Start difference. First operand 1506 states and 5993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:43,513 INFO L93 Difference]: Finished difference Result 3117 states and 11552 transitions. [2021-06-05 03:38:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:43,524 INFO L225 Difference]: With dead ends: 3117 [2021-06-05 03:38:43,525 INFO L226 Difference]: Without dead ends: 2914 [2021-06-05 03:38:43,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 173.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-06-05 03:38:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1490. [2021-06-05 03:38:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.987239758226998) internal successors, (5937), 1489 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5937 transitions. [2021-06-05 03:38:43,607 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5937 transitions. Word has length 25 [2021-06-05 03:38:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:43,607 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5937 transitions. [2021-06-05 03:38:43,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5937 transitions. [2021-06-05 03:38:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:43,611 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:43,611 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:43,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 03:38:43,611 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1325465695, now seen corresponding path program 11 times [2021-06-05 03:38:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:43,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387535826] [2021-06-05 03:38:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:43,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:43,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387535826] [2021-06-05 03:38:43,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387535826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:43,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:43,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:43,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517484084] [2021-06-05 03:38:43,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:43,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:43,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:43,792 INFO L87 Difference]: Start difference. First operand 1490 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:43,884 INFO L93 Difference]: Finished difference Result 3210 states and 11906 transitions. [2021-06-05 03:38:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:43,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:43,895 INFO L225 Difference]: With dead ends: 3210 [2021-06-05 03:38:43,896 INFO L226 Difference]: Without dead ends: 3023 [2021-06-05 03:38:43,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 153.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:43,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2021-06-05 03:38:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1536. [2021-06-05 03:38:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 3.9700325732899024) internal successors, (6094), 1535 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 6094 transitions. [2021-06-05 03:38:43,974 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 6094 transitions. Word has length 25 [2021-06-05 03:38:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:43,975 INFO L482 AbstractCegarLoop]: Abstraction has 1536 states and 6094 transitions. [2021-06-05 03:38:43,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 6094 transitions. [2021-06-05 03:38:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:43,979 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:43,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:43,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 03:38:43,979 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:43,980 INFO L82 PathProgramCache]: Analyzing trace with hash 972326205, now seen corresponding path program 12 times [2021-06-05 03:38:43,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:43,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428673317] [2021-06-05 03:38:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:44,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:44,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428673317] [2021-06-05 03:38:44,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428673317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:44,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:44,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:44,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587852210] [2021-06-05 03:38:44,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:44,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:44,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:44,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:44,123 INFO L87 Difference]: Start difference. First operand 1536 states and 6094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:44,202 INFO L93 Difference]: Finished difference Result 3245 states and 11995 transitions. [2021-06-05 03:38:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:44,214 INFO L225 Difference]: With dead ends: 3245 [2021-06-05 03:38:44,214 INFO L226 Difference]: Without dead ends: 2961 [2021-06-05 03:38:44,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-06-05 03:38:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1474. [2021-06-05 03:38:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.992532247114732) internal successors, (5881), 1473 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5881 transitions. [2021-06-05 03:38:44,289 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5881 transitions. Word has length 25 [2021-06-05 03:38:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:44,289 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5881 transitions. [2021-06-05 03:38:44,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5881 transitions. [2021-06-05 03:38:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:44,293 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:44,293 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:44,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 03:38:44,293 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash 296831769, now seen corresponding path program 13 times [2021-06-05 03:38:44,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:44,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670551760] [2021-06-05 03:38:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:44,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:44,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670551760] [2021-06-05 03:38:44,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670551760] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:44,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:44,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:44,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741846012] [2021-06-05 03:38:44,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:44,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:44,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:44,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:44,444 INFO L87 Difference]: Start difference. First operand 1474 states and 5881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:44,518 INFO L93 Difference]: Finished difference Result 3018 states and 11199 transitions. [2021-06-05 03:38:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:44,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:44,529 INFO L225 Difference]: With dead ends: 3018 [2021-06-05 03:38:44,529 INFO L226 Difference]: Without dead ends: 2859 [2021-06-05 03:38:44,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 142.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2021-06-05 03:38:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1498. [2021-06-05 03:38:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.984635938543754) internal successors, (5965), 1497 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5965 transitions. [2021-06-05 03:38:44,605 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5965 transitions. Word has length 25 [2021-06-05 03:38:44,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:44,605 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5965 transitions. [2021-06-05 03:38:44,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5965 transitions. [2021-06-05 03:38:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:44,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:44,609 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:44,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 03:38:44,609 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1293102981, now seen corresponding path program 14 times [2021-06-05 03:38:44,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:44,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193456076] [2021-06-05 03:38:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:44,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:44,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193456076] [2021-06-05 03:38:44,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193456076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:44,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:44,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:44,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525569966] [2021-06-05 03:38:44,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:44,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:44,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:44,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:44,760 INFO L87 Difference]: Start difference. First operand 1498 states and 5965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:44,853 INFO L93 Difference]: Finished difference Result 3048 states and 11292 transitions. [2021-06-05 03:38:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:44,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:44,862 INFO L225 Difference]: With dead ends: 3048 [2021-06-05 03:38:44,863 INFO L226 Difference]: Without dead ends: 2843 [2021-06-05 03:38:44,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 157.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2021-06-05 03:38:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1482. [2021-06-05 03:38:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9898717083051993) internal successors, (5909), 1481 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5909 transitions. [2021-06-05 03:38:44,928 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5909 transitions. Word has length 25 [2021-06-05 03:38:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:44,928 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5909 transitions. [2021-06-05 03:38:44,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5909 transitions. [2021-06-05 03:38:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:44,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:44,932 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:44,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 03:38:44,932 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:44,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1377894395, now seen corresponding path program 15 times [2021-06-05 03:38:44,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:44,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275894559] [2021-06-05 03:38:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:45,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:45,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275894559] [2021-06-05 03:38:45,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275894559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:45,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:45,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:45,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678883914] [2021-06-05 03:38:45,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:45,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:45,076 INFO L87 Difference]: Start difference. First operand 1482 states and 5909 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:45,148 INFO L93 Difference]: Finished difference Result 3016 states and 11186 transitions. [2021-06-05 03:38:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:45,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:45,154 INFO L225 Difference]: With dead ends: 3016 [2021-06-05 03:38:45,154 INFO L226 Difference]: Without dead ends: 2857 [2021-06-05 03:38:45,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-06-05 03:38:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1498. [2021-06-05 03:38:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.979291917167669) internal successors, (5957), 1497 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5957 transitions. [2021-06-05 03:38:45,212 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5957 transitions. Word has length 25 [2021-06-05 03:38:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:45,212 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5957 transitions. [2021-06-05 03:38:45,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5957 transitions. [2021-06-05 03:38:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:45,215 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:45,216 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:45,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 03:38:45,216 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1908774917, now seen corresponding path program 16 times [2021-06-05 03:38:45,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:45,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173678046] [2021-06-05 03:38:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:45,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:45,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173678046] [2021-06-05 03:38:45,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173678046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:45,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:45,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:45,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835575774] [2021-06-05 03:38:45,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:45,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:45,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:45,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:45,350 INFO L87 Difference]: Start difference. First operand 1498 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:45,438 INFO L93 Difference]: Finished difference Result 3044 states and 11274 transitions. [2021-06-05 03:38:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:45,445 INFO L225 Difference]: With dead ends: 3044 [2021-06-05 03:38:45,445 INFO L226 Difference]: Without dead ends: 2841 [2021-06-05 03:38:45,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 145.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-06-05 03:38:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1482. [2021-06-05 03:38:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9844699527346386) internal successors, (5901), 1481 states have internal predecessors, (5901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5901 transitions. [2021-06-05 03:38:45,520 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5901 transitions. Word has length 25 [2021-06-05 03:38:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:45,520 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5901 transitions. [2021-06-05 03:38:45,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5901 transitions. [2021-06-05 03:38:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:45,528 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:45,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:45,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 03:38:45,528 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:45,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1499910947, now seen corresponding path program 17 times [2021-06-05 03:38:45,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:45,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323144385] [2021-06-05 03:38:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:45,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:45,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323144385] [2021-06-05 03:38:45,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323144385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:45,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:45,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:45,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975296116] [2021-06-05 03:38:45,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:45,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:45,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:45,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:45,684 INFO L87 Difference]: Start difference. First operand 1482 states and 5901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:45,771 INFO L93 Difference]: Finished difference Result 3090 states and 11455 transitions. [2021-06-05 03:38:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:45,779 INFO L225 Difference]: With dead ends: 3090 [2021-06-05 03:38:45,779 INFO L226 Difference]: Without dead ends: 2901 [2021-06-05 03:38:45,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-06-05 03:38:45,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1512. [2021-06-05 03:38:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.966909331568498) internal successors, (5994), 1511 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5994 transitions. [2021-06-05 03:38:45,843 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5994 transitions. Word has length 25 [2021-06-05 03:38:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:45,843 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5994 transitions. [2021-06-05 03:38:45,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5994 transitions. [2021-06-05 03:38:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:45,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:45,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:45,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 03:38:45,847 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash 751719355, now seen corresponding path program 18 times [2021-06-05 03:38:45,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:45,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206574126] [2021-06-05 03:38:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:46,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:46,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206574126] [2021-06-05 03:38:46,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206574126] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:46,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:46,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:46,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746352948] [2021-06-05 03:38:46,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:46,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:46,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:46,007 INFO L87 Difference]: Start difference. First operand 1512 states and 5994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:46,103 INFO L93 Difference]: Finished difference Result 3088 states and 11420 transitions. [2021-06-05 03:38:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:46,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:46,111 INFO L225 Difference]: With dead ends: 3088 [2021-06-05 03:38:46,111 INFO L226 Difference]: Without dead ends: 2863 [2021-06-05 03:38:46,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 169.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-06-05 03:38:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1474. [2021-06-05 03:38:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.989816700610998) internal successors, (5877), 1473 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5877 transitions. [2021-06-05 03:38:46,174 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5877 transitions. Word has length 25 [2021-06-05 03:38:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:46,175 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5877 transitions. [2021-06-05 03:38:46,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5877 transitions. [2021-06-05 03:38:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:46,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:46,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:46,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 03:38:46,179 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:46,179 INFO L82 PathProgramCache]: Analyzing trace with hash -594697665, now seen corresponding path program 19 times [2021-06-05 03:38:46,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:46,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544629747] [2021-06-05 03:38:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:46,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:46,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544629747] [2021-06-05 03:38:46,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544629747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:46,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:46,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:46,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276574415] [2021-06-05 03:38:46,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:46,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:46,306 INFO L87 Difference]: Start difference. First operand 1474 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:46,406 INFO L93 Difference]: Finished difference Result 3261 states and 12104 transitions. [2021-06-05 03:38:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:46,414 INFO L225 Difference]: With dead ends: 3261 [2021-06-05 03:38:46,414 INFO L226 Difference]: Without dead ends: 3072 [2021-06-05 03:38:46,414 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-06-05 03:38:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1543. [2021-06-05 03:38:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 3.970817120622568) internal successors, (6123), 1542 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6123 transitions. [2021-06-05 03:38:46,481 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6123 transitions. Word has length 25 [2021-06-05 03:38:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:46,481 INFO L482 AbstractCegarLoop]: Abstraction has 1543 states and 6123 transitions. [2021-06-05 03:38:46,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6123 transitions. [2021-06-05 03:38:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:46,485 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:46,485 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:46,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 03:38:46,485 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:46,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1656932637, now seen corresponding path program 20 times [2021-06-05 03:38:46,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:46,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295677804] [2021-06-05 03:38:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:46,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:46,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295677804] [2021-06-05 03:38:46,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295677804] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:46,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:46,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:46,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788062646] [2021-06-05 03:38:46,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:46,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:46,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:46,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:46,602 INFO L87 Difference]: Start difference. First operand 1543 states and 6123 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:46,692 INFO L93 Difference]: Finished difference Result 3259 states and 12069 transitions. [2021-06-05 03:38:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:46,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:46,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:46,699 INFO L225 Difference]: With dead ends: 3259 [2021-06-05 03:38:46,700 INFO L226 Difference]: Without dead ends: 3042 [2021-06-05 03:38:46,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-06-05 03:38:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1513. [2021-06-05 03:38:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 3.9781746031746033) internal successors, (6015), 1512 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 6015 transitions. [2021-06-05 03:38:46,761 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 6015 transitions. Word has length 25 [2021-06-05 03:38:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:46,762 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 6015 transitions. [2021-06-05 03:38:46,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 6015 transitions. [2021-06-05 03:38:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:46,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:46,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:46,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 03:38:46,765 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash -659331171, now seen corresponding path program 21 times [2021-06-05 03:38:46,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:46,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21838883] [2021-06-05 03:38:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:46,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:46,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21838883] [2021-06-05 03:38:46,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21838883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:46,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:46,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:46,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166063689] [2021-06-05 03:38:46,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:46,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:46,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:46,882 INFO L87 Difference]: Start difference. First operand 1513 states and 6015 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:46,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:46,974 INFO L93 Difference]: Finished difference Result 3329 states and 12323 transitions. [2021-06-05 03:38:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:46,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:46,982 INFO L225 Difference]: With dead ends: 3329 [2021-06-05 03:38:46,982 INFO L226 Difference]: Without dead ends: 3140 [2021-06-05 03:38:46,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-06-05 03:38:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1576. [2021-06-05 03:38:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 3.9504761904761905) internal successors, (6222), 1575 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 6222 transitions. [2021-06-05 03:38:47,043 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 6222 transitions. Word has length 25 [2021-06-05 03:38:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:47,043 INFO L482 AbstractCegarLoop]: Abstraction has 1576 states and 6222 transitions. [2021-06-05 03:38:47,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 6222 transitions. [2021-06-05 03:38:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:47,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:47,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:47,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 03:38:47,047 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:47,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1215119459, now seen corresponding path program 22 times [2021-06-05 03:38:47,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:47,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145383645] [2021-06-05 03:38:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:47,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:47,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145383645] [2021-06-05 03:38:47,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145383645] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:47,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:47,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:47,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647627813] [2021-06-05 03:38:47,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:47,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:47,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:47,167 INFO L87 Difference]: Start difference. First operand 1576 states and 6222 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:47,235 INFO L93 Difference]: Finished difference Result 3362 states and 12406 transitions. [2021-06-05 03:38:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:47,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:47,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:47,242 INFO L225 Difference]: With dead ends: 3362 [2021-06-05 03:38:47,242 INFO L226 Difference]: Without dead ends: 3077 [2021-06-05 03:38:47,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-06-05 03:38:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1513. [2021-06-05 03:38:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 3.9576719576719577) internal successors, (5984), 1512 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 5984 transitions. [2021-06-05 03:38:47,298 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 5984 transitions. Word has length 25 [2021-06-05 03:38:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:47,298 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 5984 transitions. [2021-06-05 03:38:47,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 5984 transitions. [2021-06-05 03:38:47,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:47,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:47,302 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:47,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 03:38:47,302 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash 323016443, now seen corresponding path program 23 times [2021-06-05 03:38:47,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:47,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020480130] [2021-06-05 03:38:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:47,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:47,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020480130] [2021-06-05 03:38:47,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020480130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:47,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:47,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:47,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257427210] [2021-06-05 03:38:47,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:47,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:47,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:47,421 INFO L87 Difference]: Start difference. First operand 1513 states and 5984 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:47,492 INFO L93 Difference]: Finished difference Result 3308 states and 12231 transitions. [2021-06-05 03:38:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:47,499 INFO L225 Difference]: With dead ends: 3308 [2021-06-05 03:38:47,499 INFO L226 Difference]: Without dead ends: 3121 [2021-06-05 03:38:47,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-06-05 03:38:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1559. [2021-06-05 03:38:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.941591784338896) internal successors, (6141), 1558 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6141 transitions. [2021-06-05 03:38:47,563 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6141 transitions. Word has length 25 [2021-06-05 03:38:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:47,563 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6141 transitions. [2021-06-05 03:38:47,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6141 transitions. [2021-06-05 03:38:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:47,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:47,567 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:47,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 03:38:47,567 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:47,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:47,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2034373155, now seen corresponding path program 24 times [2021-06-05 03:38:47,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:47,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968799377] [2021-06-05 03:38:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:47,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:47,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968799377] [2021-06-05 03:38:47,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968799377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:47,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:47,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:47,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639854998] [2021-06-05 03:38:47,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:47,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:47,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:47,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:47,684 INFO L87 Difference]: Start difference. First operand 1559 states and 6141 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:47,764 INFO L93 Difference]: Finished difference Result 3343 states and 12320 transitions. [2021-06-05 03:38:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:47,774 INFO L225 Difference]: With dead ends: 3343 [2021-06-05 03:38:47,775 INFO L226 Difference]: Without dead ends: 3020 [2021-06-05 03:38:47,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2021-06-05 03:38:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1458. [2021-06-05 03:38:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9979409746053536) internal successors, (5825), 1457 states have internal predecessors, (5825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5825 transitions. [2021-06-05 03:38:47,837 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5825 transitions. Word has length 25 [2021-06-05 03:38:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:47,837 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5825 transitions. [2021-06-05 03:38:47,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5825 transitions. [2021-06-05 03:38:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:47,840 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:47,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:47,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 03:38:47,841 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -891763715, now seen corresponding path program 25 times [2021-06-05 03:38:47,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:47,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703857868] [2021-06-05 03:38:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:47,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:47,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703857868] [2021-06-05 03:38:47,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703857868] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:47,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:47,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:47,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768215395] [2021-06-05 03:38:47,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:47,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:47,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:47,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:47,961 INFO L87 Difference]: Start difference. First operand 1458 states and 5825 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:48,025 INFO L93 Difference]: Finished difference Result 3146 states and 11689 transitions. [2021-06-05 03:38:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:48,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:48,032 INFO L225 Difference]: With dead ends: 3146 [2021-06-05 03:38:48,032 INFO L226 Difference]: Without dead ends: 2987 [2021-06-05 03:38:48,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2021-06-05 03:38:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1526. [2021-06-05 03:38:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 3.9954098360655736) internal successors, (6093), 1525 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6093 transitions. [2021-06-05 03:38:48,091 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6093 transitions. Word has length 25 [2021-06-05 03:38:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:48,092 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 6093 transitions. [2021-06-05 03:38:48,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6093 transitions. [2021-06-05 03:38:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:48,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:48,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:48,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 03:38:48,095 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:48,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1900061699, now seen corresponding path program 26 times [2021-06-05 03:38:48,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:48,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127981512] [2021-06-05 03:38:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:48,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:48,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127981512] [2021-06-05 03:38:48,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127981512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:48,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:48,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:48,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076477741] [2021-06-05 03:38:48,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:48,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:48,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:48,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:48,215 INFO L87 Difference]: Start difference. First operand 1526 states and 6093 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:48,289 INFO L93 Difference]: Finished difference Result 3209 states and 11896 transitions. [2021-06-05 03:38:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:48,296 INFO L225 Difference]: With dead ends: 3209 [2021-06-05 03:38:48,297 INFO L226 Difference]: Without dead ends: 2955 [2021-06-05 03:38:48,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-05 03:38:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1494. [2021-06-05 03:38:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9953114534494305) internal successors, (5965), 1493 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5965 transitions. [2021-06-05 03:38:48,358 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5965 transitions. Word has length 25 [2021-06-05 03:38:48,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:48,359 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5965 transitions. [2021-06-05 03:38:48,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5965 transitions. [2021-06-05 03:38:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:48,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:48,362 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:48,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 03:38:48,363 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:48,363 INFO L82 PathProgramCache]: Analyzing trace with hash -853149031, now seen corresponding path program 27 times [2021-06-05 03:38:48,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:48,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954667261] [2021-06-05 03:38:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:48,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:48,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954667261] [2021-06-05 03:38:48,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954667261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:48,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:48,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:48,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641167057] [2021-06-05 03:38:48,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:48,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:48,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:48,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:48,506 INFO L87 Difference]: Start difference. First operand 1494 states and 5965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:48,575 INFO L93 Difference]: Finished difference Result 3097 states and 11495 transitions. [2021-06-05 03:38:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:48,582 INFO L225 Difference]: With dead ends: 3097 [2021-06-05 03:38:48,583 INFO L226 Difference]: Without dead ends: 2938 [2021-06-05 03:38:48,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-06-05 03:38:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1510. [2021-06-05 03:38:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.984758117958913) internal successors, (6013), 1509 states have internal predecessors, (6013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 6013 transitions. [2021-06-05 03:38:48,658 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 6013 transitions. Word has length 25 [2021-06-05 03:38:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:48,658 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 6013 transitions. [2021-06-05 03:38:48,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 6013 transitions. [2021-06-05 03:38:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:48,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:48,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:48,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 03:38:48,662 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:48,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:48,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1851883515, now seen corresponding path program 28 times [2021-06-05 03:38:48,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:48,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889188989] [2021-06-05 03:38:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:48,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:48,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889188989] [2021-06-05 03:38:48,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889188989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:48,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:48,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:48,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412958948] [2021-06-05 03:38:48,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:48,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:48,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:48,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:48,779 INFO L87 Difference]: Start difference. First operand 1510 states and 6013 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:48,861 INFO L93 Difference]: Finished difference Result 3127 states and 11588 transitions. [2021-06-05 03:38:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:48,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:48,867 INFO L225 Difference]: With dead ends: 3127 [2021-06-05 03:38:48,867 INFO L226 Difference]: Without dead ends: 2922 [2021-06-05 03:38:48,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-06-05 03:38:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1494. [2021-06-05 03:38:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.989953114534494) internal successors, (5957), 1493 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5957 transitions. [2021-06-05 03:38:48,922 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5957 transitions. Word has length 25 [2021-06-05 03:38:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:48,922 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5957 transitions. [2021-06-05 03:38:48,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5957 transitions. [2021-06-05 03:38:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:48,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:48,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:48,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 03:38:48,926 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:48,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1213720029, now seen corresponding path program 29 times [2021-06-05 03:38:48,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:48,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030619542] [2021-06-05 03:38:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:49,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:49,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030619542] [2021-06-05 03:38:49,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030619542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:49,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:49,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296327872] [2021-06-05 03:38:49,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:49,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:49,035 INFO L87 Difference]: Start difference. First operand 1494 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:49,120 INFO L93 Difference]: Finished difference Result 3237 states and 11993 transitions. [2021-06-05 03:38:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:49,129 INFO L225 Difference]: With dead ends: 3237 [2021-06-05 03:38:49,129 INFO L226 Difference]: Without dead ends: 3048 [2021-06-05 03:38:49,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2021-06-05 03:38:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1557. [2021-06-05 03:38:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.961439588688946) internal successors, (6164), 1556 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 6164 transitions. [2021-06-05 03:38:49,191 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 6164 transitions. Word has length 25 [2021-06-05 03:38:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:49,191 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 6164 transitions. [2021-06-05 03:38:49,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 6164 transitions. [2021-06-05 03:38:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:49,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:49,195 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:49,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 03:38:49,195 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:49,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1511772987, now seen corresponding path program 30 times [2021-06-05 03:38:49,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:49,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684992052] [2021-06-05 03:38:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:49,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:49,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684992052] [2021-06-05 03:38:49,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684992052] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:49,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:49,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:49,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678964342] [2021-06-05 03:38:49,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:49,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:49,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:49,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:49,304 INFO L87 Difference]: Start difference. First operand 1557 states and 6164 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:49,374 INFO L93 Difference]: Finished difference Result 3270 states and 12076 transitions. [2021-06-05 03:38:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:49,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:49,381 INFO L225 Difference]: With dead ends: 3270 [2021-06-05 03:38:49,381 INFO L226 Difference]: Without dead ends: 2961 [2021-06-05 03:38:49,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-06-05 03:38:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1470. [2021-06-05 03:38:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.995234853641933) internal successors, (5869), 1469 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5869 transitions. [2021-06-05 03:38:49,440 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5869 transitions. Word has length 25 [2021-06-05 03:38:49,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:49,440 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5869 transitions. [2021-06-05 03:38:49,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5869 transitions. [2021-06-05 03:38:49,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:49,443 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:49,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:49,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 03:38:49,443 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:49,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:49,443 INFO L82 PathProgramCache]: Analyzing trace with hash 407415963, now seen corresponding path program 31 times [2021-06-05 03:38:49,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:49,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409597436] [2021-06-05 03:38:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:49,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:49,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409597436] [2021-06-05 03:38:49,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409597436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:49,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:49,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:49,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543015948] [2021-06-05 03:38:49,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:49,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:49,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:49,580 INFO L87 Difference]: Start difference. First operand 1470 states and 5869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:49,652 INFO L93 Difference]: Finished difference Result 3113 states and 11574 transitions. [2021-06-05 03:38:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:49,659 INFO L225 Difference]: With dead ends: 3113 [2021-06-05 03:38:49,660 INFO L226 Difference]: Without dead ends: 2954 [2021-06-05 03:38:49,660 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-06-05 03:38:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1518. [2021-06-05 03:38:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.990112063282795) internal successors, (6053), 1517 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 6053 transitions. [2021-06-05 03:38:49,720 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 6053 transitions. Word has length 25 [2021-06-05 03:38:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:49,720 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 6053 transitions. [2021-06-05 03:38:49,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 6053 transitions. [2021-06-05 03:38:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:49,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:49,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:49,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 03:38:49,726 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:49,726 INFO L82 PathProgramCache]: Analyzing trace with hash -600882021, now seen corresponding path program 32 times [2021-06-05 03:38:49,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:49,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119769865] [2021-06-05 03:38:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:49,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:49,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119769865] [2021-06-05 03:38:49,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119769865] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:49,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:49,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:49,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432930481] [2021-06-05 03:38:49,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:49,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:49,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:49,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:49,856 INFO L87 Difference]: Start difference. First operand 1518 states and 6053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:49,920 INFO L93 Difference]: Finished difference Result 3176 states and 11781 transitions. [2021-06-05 03:38:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:49,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:49,926 INFO L225 Difference]: With dead ends: 3176 [2021-06-05 03:38:49,926 INFO L226 Difference]: Without dead ends: 2922 [2021-06-05 03:38:49,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-06-05 03:38:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1486. [2021-06-05 03:38:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.98989898989899) internal successors, (5925), 1485 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5925 transitions. [2021-06-05 03:38:49,970 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5925 transitions. Word has length 25 [2021-06-05 03:38:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:49,970 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5925 transitions. [2021-06-05 03:38:49,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5925 transitions. [2021-06-05 03:38:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:49,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:49,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:49,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 03:38:49,974 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:49,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1853761475, now seen corresponding path program 33 times [2021-06-05 03:38:49,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:49,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270161012] [2021-06-05 03:38:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:50,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:50,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270161012] [2021-06-05 03:38:50,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270161012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:50,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:50,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:50,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214816532] [2021-06-05 03:38:50,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:50,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:50,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:50,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:50,082 INFO L87 Difference]: Start difference. First operand 1486 states and 5925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:50,155 INFO L93 Difference]: Finished difference Result 3058 states and 11363 transitions. [2021-06-05 03:38:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:50,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:50,166 INFO L225 Difference]: With dead ends: 3058 [2021-06-05 03:38:50,166 INFO L226 Difference]: Without dead ends: 2899 [2021-06-05 03:38:50,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2021-06-05 03:38:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1502. [2021-06-05 03:38:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.979347101932045) internal successors, (5973), 1501 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5973 transitions. [2021-06-05 03:38:50,210 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5973 transitions. Word has length 25 [2021-06-05 03:38:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:50,210 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5973 transitions. [2021-06-05 03:38:50,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5973 transitions. [2021-06-05 03:38:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:50,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:50,212 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:50,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 03:38:50,212 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:50,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:50,212 INFO L82 PathProgramCache]: Analyzing trace with hash -173264835, now seen corresponding path program 34 times [2021-06-05 03:38:50,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:50,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693642815] [2021-06-05 03:38:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:50,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:50,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693642815] [2021-06-05 03:38:50,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693642815] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:50,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:50,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:50,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592691462] [2021-06-05 03:38:50,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:50,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:50,329 INFO L87 Difference]: Start difference. First operand 1502 states and 5973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:50,436 INFO L93 Difference]: Finished difference Result 3082 states and 11439 transitions. [2021-06-05 03:38:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:50,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:50,443 INFO L225 Difference]: With dead ends: 3082 [2021-06-05 03:38:50,443 INFO L226 Difference]: Without dead ends: 2883 [2021-06-05 03:38:50,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-06-05 03:38:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1486. [2021-06-05 03:38:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9845117845117843) internal successors, (5917), 1485 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5917 transitions. [2021-06-05 03:38:50,501 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5917 transitions. Word has length 25 [2021-06-05 03:38:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:50,501 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5917 transitions. [2021-06-05 03:38:50,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5917 transitions. [2021-06-05 03:38:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:50,504 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:50,505 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:50,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 03:38:50,505 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:50,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1514981437, now seen corresponding path program 35 times [2021-06-05 03:38:50,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:50,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609603847] [2021-06-05 03:38:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:50,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:50,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609603847] [2021-06-05 03:38:50,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609603847] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:50,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:50,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:50,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544232764] [2021-06-05 03:38:50,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:50,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:50,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:50,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:50,636 INFO L87 Difference]: Start difference. First operand 1486 states and 5917 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:50,728 INFO L93 Difference]: Finished difference Result 3173 states and 11786 transitions. [2021-06-05 03:38:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:50,736 INFO L225 Difference]: With dead ends: 3173 [2021-06-05 03:38:50,736 INFO L226 Difference]: Without dead ends: 2990 [2021-06-05 03:38:50,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-06-05 03:38:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1530. [2021-06-05 03:38:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.9692609548724658) internal successors, (6069), 1529 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6069 transitions. [2021-06-05 03:38:50,791 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6069 transitions. Word has length 25 [2021-06-05 03:38:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:50,791 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 6069 transitions. [2021-06-05 03:38:50,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6069 transitions. [2021-06-05 03:38:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:50,793 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:50,793 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:50,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 03:38:50,793 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:50,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:50,794 INFO L82 PathProgramCache]: Analyzing trace with hash 510649499, now seen corresponding path program 36 times [2021-06-05 03:38:50,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:50,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73409564] [2021-06-05 03:38:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:50,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:50,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73409564] [2021-06-05 03:38:50,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73409564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:50,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:50,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:50,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231241760] [2021-06-05 03:38:50,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:50,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:50,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:50,925 INFO L87 Difference]: Start difference. First operand 1530 states and 6069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:50,989 INFO L93 Difference]: Finished difference Result 3212 states and 11889 transitions. [2021-06-05 03:38:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:50,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:50,995 INFO L225 Difference]: With dead ends: 3212 [2021-06-05 03:38:50,995 INFO L226 Difference]: Without dead ends: 2930 [2021-06-05 03:38:50,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-06-05 03:38:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1470. [2021-06-05 03:38:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.989788972089857) internal successors, (5861), 1469 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5861 transitions. [2021-06-05 03:38:51,038 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5861 transitions. Word has length 25 [2021-06-05 03:38:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:51,038 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5861 transitions. [2021-06-05 03:38:51,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5861 transitions. [2021-06-05 03:38:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:51,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:51,040 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:51,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 03:38:51,040 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1102019447, now seen corresponding path program 37 times [2021-06-05 03:38:51,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:51,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508460012] [2021-06-05 03:38:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:51,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:51,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508460012] [2021-06-05 03:38:51,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508460012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:51,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:51,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:51,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345995734] [2021-06-05 03:38:51,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:51,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:51,146 INFO L87 Difference]: Start difference. First operand 1470 states and 5861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:51,215 INFO L93 Difference]: Finished difference Result 2991 states and 11110 transitions. [2021-06-05 03:38:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:51,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:51,221 INFO L225 Difference]: With dead ends: 2991 [2021-06-05 03:38:51,221 INFO L226 Difference]: Without dead ends: 2832 [2021-06-05 03:38:51,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:51,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-06-05 03:38:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1494. [2021-06-05 03:38:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9819156061620897) internal successors, (5945), 1493 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5945 transitions. [2021-06-05 03:38:51,283 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5945 transitions. Word has length 25 [2021-06-05 03:38:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:51,283 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5945 transitions. [2021-06-05 03:38:51,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5945 transitions. [2021-06-05 03:38:51,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:51,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:51,286 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:51,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 03:38:51,286 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash -487915303, now seen corresponding path program 38 times [2021-06-05 03:38:51,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:51,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104482848] [2021-06-05 03:38:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:51,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:51,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104482848] [2021-06-05 03:38:51,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104482848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:51,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:51,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:51,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74666173] [2021-06-05 03:38:51,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:51,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:51,398 INFO L87 Difference]: Start difference. First operand 1494 states and 5945 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:51,476 INFO L93 Difference]: Finished difference Result 3021 states and 11203 transitions. [2021-06-05 03:38:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:51,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:51,484 INFO L225 Difference]: With dead ends: 3021 [2021-06-05 03:38:51,484 INFO L226 Difference]: Without dead ends: 2816 [2021-06-05 03:38:51,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-06-05 03:38:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1478. [2021-06-05 03:38:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.987136086662153) internal successors, (5889), 1477 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5889 transitions. [2021-06-05 03:38:51,540 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5889 transitions. Word has length 25 [2021-06-05 03:38:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:51,540 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5889 transitions. [2021-06-05 03:38:51,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5889 transitions. [2021-06-05 03:38:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:51,543 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:51,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:51,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 03:38:51,544 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash 895211481, now seen corresponding path program 39 times [2021-06-05 03:38:51,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:51,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958690559] [2021-06-05 03:38:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:51,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:51,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958690559] [2021-06-05 03:38:51,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958690559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:51,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:51,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:51,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962505386] [2021-06-05 03:38:51,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:51,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:51,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:51,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:51,642 INFO L87 Difference]: Start difference. First operand 1478 states and 5889 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:51,700 INFO L93 Difference]: Finished difference Result 2985 states and 11085 transitions. [2021-06-05 03:38:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:51,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:51,706 INFO L225 Difference]: With dead ends: 2985 [2021-06-05 03:38:51,706 INFO L226 Difference]: Without dead ends: 2826 [2021-06-05 03:38:51,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-06-05 03:38:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1494. [2021-06-05 03:38:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9765572672471534) internal successors, (5937), 1493 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5937 transitions. [2021-06-05 03:38:51,747 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5937 transitions. Word has length 25 [2021-06-05 03:38:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:51,747 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5937 transitions. [2021-06-05 03:38:51,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5937 transitions. [2021-06-05 03:38:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:51,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:51,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:51,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 03:38:51,749 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1719259175, now seen corresponding path program 40 times [2021-06-05 03:38:51,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:51,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093250323] [2021-06-05 03:38:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:51,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:51,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093250323] [2021-06-05 03:38:51,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093250323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:51,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:51,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:51,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882078601] [2021-06-05 03:38:51,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:51,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:51,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:51,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:51,852 INFO L87 Difference]: Start difference. First operand 1494 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:51,931 INFO L93 Difference]: Finished difference Result 3009 states and 11161 transitions. [2021-06-05 03:38:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:51,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:51,938 INFO L225 Difference]: With dead ends: 3009 [2021-06-05 03:38:51,938 INFO L226 Difference]: Without dead ends: 2810 [2021-06-05 03:38:51,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-06-05 03:38:51,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1478. [2021-06-05 03:38:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.981719702098849) internal successors, (5881), 1477 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5881 transitions. [2021-06-05 03:38:51,978 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5881 transitions. Word has length 25 [2021-06-05 03:38:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:51,978 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5881 transitions. [2021-06-05 03:38:51,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5881 transitions. [2021-06-05 03:38:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:51,980 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:51,980 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:51,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 03:38:51,980 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1982593861, now seen corresponding path program 41 times [2021-06-05 03:38:51,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:51,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355641580] [2021-06-05 03:38:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:52,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:52,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355641580] [2021-06-05 03:38:52,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355641580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:52,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:52,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:52,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391574623] [2021-06-05 03:38:52,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:52,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:52,071 INFO L87 Difference]: Start difference. First operand 1478 states and 5881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:52,137 INFO L93 Difference]: Finished difference Result 3057 states and 11347 transitions. [2021-06-05 03:38:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:52,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:52,143 INFO L225 Difference]: With dead ends: 3057 [2021-06-05 03:38:52,143 INFO L226 Difference]: Without dead ends: 2868 [2021-06-05 03:38:52,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2021-06-05 03:38:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1506. [2021-06-05 03:38:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.966112956810631) internal successors, (5969), 1505 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5969 transitions. [2021-06-05 03:38:52,186 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5969 transitions. Word has length 25 [2021-06-05 03:38:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:52,186 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5969 transitions. [2021-06-05 03:38:52,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5969 transitions. [2021-06-05 03:38:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:52,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:52,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:52,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 03:38:52,189 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash 920228889, now seen corresponding path program 42 times [2021-06-05 03:38:52,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:52,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935611434] [2021-06-05 03:38:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:52,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:52,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935611434] [2021-06-05 03:38:52,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935611434] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:52,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:52,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:52,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684171152] [2021-06-05 03:38:52,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:52,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:52,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:52,298 INFO L87 Difference]: Start difference. First operand 1506 states and 5969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:52,370 INFO L93 Difference]: Finished difference Result 3051 states and 11302 transitions. [2021-06-05 03:38:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:52,376 INFO L225 Difference]: With dead ends: 3051 [2021-06-05 03:38:52,376 INFO L226 Difference]: Without dead ends: 2832 [2021-06-05 03:38:52,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-06-05 03:38:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1470. [2021-06-05 03:38:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.987066031313819) internal successors, (5857), 1469 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5857 transitions. [2021-06-05 03:38:52,416 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5857 transitions. Word has length 25 [2021-06-05 03:38:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:52,416 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5857 transitions. [2021-06-05 03:38:52,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5857 transitions. [2021-06-05 03:38:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:52,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:52,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:52,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 03:38:52,418 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:52,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1077380579, now seen corresponding path program 43 times [2021-06-05 03:38:52,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:52,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201712456] [2021-06-05 03:38:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:52,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:52,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201712456] [2021-06-05 03:38:52,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201712456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:52,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:52,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:52,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655804644] [2021-06-05 03:38:52,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:52,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:52,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:52,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:52,576 INFO L87 Difference]: Start difference. First operand 1470 states and 5857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:52,667 INFO L93 Difference]: Finished difference Result 3217 states and 11965 transitions. [2021-06-05 03:38:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:52,675 INFO L225 Difference]: With dead ends: 3217 [2021-06-05 03:38:52,675 INFO L226 Difference]: Without dead ends: 3028 [2021-06-05 03:38:52,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-06-05 03:38:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1528. [2021-06-05 03:38:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.97773411918795) internal successors, (6074), 1527 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6074 transitions. [2021-06-05 03:38:52,733 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6074 transitions. Word has length 25 [2021-06-05 03:38:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:52,733 INFO L482 AbstractCegarLoop]: Abstraction has 1528 states and 6074 transitions. [2021-06-05 03:38:52,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6074 transitions. [2021-06-05 03:38:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:52,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:52,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:52,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 03:38:52,736 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:52,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1825442171, now seen corresponding path program 44 times [2021-06-05 03:38:52,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:52,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694075287] [2021-06-05 03:38:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:52,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:52,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694075287] [2021-06-05 03:38:52,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694075287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:52,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:52,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:52,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913844675] [2021-06-05 03:38:52,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:52,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:52,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:52,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:52,913 INFO L87 Difference]: Start difference. First operand 1528 states and 6074 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:53,047 INFO L93 Difference]: Finished difference Result 3211 states and 11920 transitions. [2021-06-05 03:38:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:53,054 INFO L225 Difference]: With dead ends: 3211 [2021-06-05 03:38:53,054 INFO L226 Difference]: Without dead ends: 3000 [2021-06-05 03:38:53,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 169.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-06-05 03:38:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1500. [2021-06-05 03:38:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.983989326217478) internal successors, (5972), 1499 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5972 transitions. [2021-06-05 03:38:53,184 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5972 transitions. Word has length 25 [2021-06-05 03:38:53,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:53,185 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5972 transitions. [2021-06-05 03:38:53,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5972 transitions. [2021-06-05 03:38:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:53,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:53,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:53,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 03:38:53,188 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:53,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:53,193 INFO L82 PathProgramCache]: Analyzing trace with hash 127268603, now seen corresponding path program 45 times [2021-06-05 03:38:53,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:53,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626201497] [2021-06-05 03:38:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:53,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:53,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626201497] [2021-06-05 03:38:53,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626201497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:53,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:53,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:53,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191182701] [2021-06-05 03:38:53,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:53,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:53,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:53,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:53,363 INFO L87 Difference]: Start difference. First operand 1500 states and 5972 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:53,488 INFO L93 Difference]: Finished difference Result 3291 states and 12204 transitions. [2021-06-05 03:38:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:53,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:53,495 INFO L225 Difference]: With dead ends: 3291 [2021-06-05 03:38:53,495 INFO L226 Difference]: Without dead ends: 3102 [2021-06-05 03:38:53,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2021-06-05 03:38:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 1563. [2021-06-05 03:38:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.9558258642765685) internal successors, (6179), 1562 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6179 transitions. [2021-06-05 03:38:53,597 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6179 transitions. Word has length 25 [2021-06-05 03:38:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:53,597 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 6179 transitions. [2021-06-05 03:38:53,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6179 transitions. [2021-06-05 03:38:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:53,602 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:53,602 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:53,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 03:38:53,602 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash 859350907, now seen corresponding path program 46 times [2021-06-05 03:38:53,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:53,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54156178] [2021-06-05 03:38:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:53,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:53,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54156178] [2021-06-05 03:38:53,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54156178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:53,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:53,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:53,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678875368] [2021-06-05 03:38:53,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:53,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:53,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:53,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:53,789 INFO L87 Difference]: Start difference. First operand 1563 states and 6179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:53,903 INFO L93 Difference]: Finished difference Result 3324 states and 12287 transitions. [2021-06-05 03:38:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:53,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:53,911 INFO L225 Difference]: With dead ends: 3324 [2021-06-05 03:38:53,911 INFO L226 Difference]: Without dead ends: 3039 [2021-06-05 03:38:53,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-06-05 03:38:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1500. [2021-06-05 03:38:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.963975983989326) internal successors, (5942), 1499 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5942 transitions. [2021-06-05 03:38:54,028 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5942 transitions. Word has length 25 [2021-06-05 03:38:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:54,028 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5942 transitions. [2021-06-05 03:38:54,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5942 transitions. [2021-06-05 03:38:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:54,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:54,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:54,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 03:38:54,048 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash 491525977, now seen corresponding path program 47 times [2021-06-05 03:38:54,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:54,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117292257] [2021-06-05 03:38:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:54,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:54,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117292257] [2021-06-05 03:38:54,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117292257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:54,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:54,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:54,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554212791] [2021-06-05 03:38:54,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:54,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:54,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:54,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:54,219 INFO L87 Difference]: Start difference. First operand 1500 states and 5942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:54,346 INFO L93 Difference]: Finished difference Result 3260 states and 12082 transitions. [2021-06-05 03:38:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:54,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:54,354 INFO L225 Difference]: With dead ends: 3260 [2021-06-05 03:38:54,354 INFO L226 Difference]: Without dead ends: 3077 [2021-06-05 03:38:54,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-06-05 03:38:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1544. [2021-06-05 03:38:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 3.949449125081011) internal successors, (6094), 1543 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 6094 transitions. [2021-06-05 03:38:54,478 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 6094 transitions. Word has length 25 [2021-06-05 03:38:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:54,478 INFO L482 AbstractCegarLoop]: Abstraction has 1544 states and 6094 transitions. [2021-06-05 03:38:54,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 6094 transitions. [2021-06-05 03:38:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:54,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:54,482 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:54,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 03:38:54,482 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash -577993029, now seen corresponding path program 48 times [2021-06-05 03:38:54,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:54,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649908616] [2021-06-05 03:38:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:54,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:54,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649908616] [2021-06-05 03:38:54,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649908616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:54,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:54,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:54,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374476616] [2021-06-05 03:38:54,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:54,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:54,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:54,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:54,693 INFO L87 Difference]: Start difference. First operand 1544 states and 6094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:54,821 INFO L93 Difference]: Finished difference Result 3299 states and 12185 transitions. [2021-06-05 03:38:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:54,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:54,829 INFO L225 Difference]: With dead ends: 3299 [2021-06-05 03:38:54,830 INFO L226 Difference]: Without dead ends: 2991 [2021-06-05 03:38:54,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2021-06-05 03:38:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1458. [2021-06-05 03:38:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9938229238160603) internal successors, (5819), 1457 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5819 transitions. [2021-06-05 03:38:54,967 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5819 transitions. Word has length 25 [2021-06-05 03:38:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:54,968 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5819 transitions. [2021-06-05 03:38:54,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5819 transitions. [2021-06-05 03:38:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:54,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:54,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:54,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 03:38:54,971 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 483139259, now seen corresponding path program 49 times [2021-06-05 03:38:54,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:54,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044300642] [2021-06-05 03:38:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:55,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:55,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044300642] [2021-06-05 03:38:55,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044300642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:55,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:55,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:55,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454193178] [2021-06-05 03:38:55,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:55,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:55,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:55,177 INFO L87 Difference]: Start difference. First operand 1458 states and 5819 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:55,247 INFO L93 Difference]: Finished difference Result 3080 states and 11471 transitions. [2021-06-05 03:38:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:55,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:55,255 INFO L225 Difference]: With dead ends: 3080 [2021-06-05 03:38:55,255 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 03:38:55,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 03:38:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1514. [2021-06-05 03:38:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.994051553205552) internal successors, (6043), 1513 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6043 transitions. [2021-06-05 03:38:55,324 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6043 transitions. Word has length 25 [2021-06-05 03:38:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:55,325 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6043 transitions. [2021-06-05 03:38:55,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6043 transitions. [2021-06-05 03:38:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:55,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:55,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:55,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 03:38:55,331 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash -525158725, now seen corresponding path program 50 times [2021-06-05 03:38:55,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:55,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031614831] [2021-06-05 03:38:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:55,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:55,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031614831] [2021-06-05 03:38:55,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031614831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:55,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:55,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:55,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328341440] [2021-06-05 03:38:55,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:55,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:55,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:55,556 INFO L87 Difference]: Start difference. First operand 1514 states and 6043 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:55,647 INFO L93 Difference]: Finished difference Result 3143 states and 11678 transitions. [2021-06-05 03:38:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:55,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:55,654 INFO L225 Difference]: With dead ends: 3143 [2021-06-05 03:38:55,654 INFO L226 Difference]: Without dead ends: 2889 [2021-06-05 03:38:55,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 183.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:55,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2021-06-05 03:38:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1482. [2021-06-05 03:38:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9939230249831197) internal successors, (5915), 1481 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5915 transitions. [2021-06-05 03:38:55,719 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5915 transitions. Word has length 25 [2021-06-05 03:38:55,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:55,719 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5915 transitions. [2021-06-05 03:38:55,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5915 transitions. [2021-06-05 03:38:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:55,722 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:55,723 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:55,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 03:38:55,723 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1472172765, now seen corresponding path program 51 times [2021-06-05 03:38:55,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:55,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014138939] [2021-06-05 03:38:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:55,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:55,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014138939] [2021-06-05 03:38:55,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014138939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:55,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:55,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:55,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560946279] [2021-06-05 03:38:55,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:55,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:55,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:55,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:55,913 INFO L87 Difference]: Start difference. First operand 1482 states and 5915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:55,990 INFO L93 Difference]: Finished difference Result 3029 states and 11272 transitions. [2021-06-05 03:38:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:55,997 INFO L225 Difference]: With dead ends: 3029 [2021-06-05 03:38:55,997 INFO L226 Difference]: Without dead ends: 2870 [2021-06-05 03:38:55,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-06-05 03:38:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1498. [2021-06-05 03:38:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9832999331997327) internal successors, (5963), 1497 states have internal predecessors, (5963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5963 transitions. [2021-06-05 03:38:56,063 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5963 transitions. Word has length 25 [2021-06-05 03:38:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:56,063 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5963 transitions. [2021-06-05 03:38:56,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5963 transitions. [2021-06-05 03:38:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:56,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:56,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:56,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 03:38:56,074 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1814496547, now seen corresponding path program 52 times [2021-06-05 03:38:56,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:56,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298621395] [2021-06-05 03:38:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:56,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:56,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298621395] [2021-06-05 03:38:56,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298621395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:56,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:56,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:56,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097474236] [2021-06-05 03:38:56,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:56,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:56,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:56,257 INFO L87 Difference]: Start difference. First operand 1498 states and 5963 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:56,373 INFO L93 Difference]: Finished difference Result 3057 states and 11360 transitions. [2021-06-05 03:38:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:56,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:56,380 INFO L225 Difference]: With dead ends: 3057 [2021-06-05 03:38:56,380 INFO L226 Difference]: Without dead ends: 2854 [2021-06-05 03:38:56,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-06-05 03:38:56,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1482. [2021-06-05 03:38:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.988521269412559) internal successors, (5907), 1481 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2021-06-05 03:38:56,446 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2021-06-05 03:38:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:56,446 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2021-06-05 03:38:56,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2021-06-05 03:38:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:56,449 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:56,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:56,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 03:38:56,450 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:56,451 INFO L82 PathProgramCache]: Analyzing trace with hash -126250275, now seen corresponding path program 53 times [2021-06-05 03:38:56,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:56,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337189176] [2021-06-05 03:38:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:56,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:56,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337189176] [2021-06-05 03:38:56,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337189176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:56,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:56,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:56,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103557241] [2021-06-05 03:38:56,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:56,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:56,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:56,639 INFO L87 Difference]: Start difference. First operand 1482 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:56,770 INFO L93 Difference]: Finished difference Result 3150 states and 11714 transitions. [2021-06-05 03:38:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:56,777 INFO L225 Difference]: With dead ends: 3150 [2021-06-05 03:38:56,777 INFO L226 Difference]: Without dead ends: 2963 [2021-06-05 03:38:56,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 179.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:56,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2021-06-05 03:38:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1528. [2021-06-05 03:38:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.971185330713818) internal successors, (6064), 1527 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6064 transitions. [2021-06-05 03:38:56,894 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6064 transitions. Word has length 25 [2021-06-05 03:38:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:56,894 INFO L482 AbstractCegarLoop]: Abstraction has 1528 states and 6064 transitions. [2021-06-05 03:38:56,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6064 transitions. [2021-06-05 03:38:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:56,913 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:56,913 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:56,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 03:38:56,914 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash -479389765, now seen corresponding path program 54 times [2021-06-05 03:38:56,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:56,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801198542] [2021-06-05 03:38:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:57,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:57,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801198542] [2021-06-05 03:38:57,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801198542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:57,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:57,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:57,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241253521] [2021-06-05 03:38:57,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:57,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:57,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:57,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:57,088 INFO L87 Difference]: Start difference. First operand 1528 states and 6064 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:57,183 INFO L93 Difference]: Finished difference Result 3185 states and 11803 transitions. [2021-06-05 03:38:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:57,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:57,204 INFO L225 Difference]: With dead ends: 3185 [2021-06-05 03:38:57,204 INFO L226 Difference]: Without dead ends: 2901 [2021-06-05 03:38:57,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-06-05 03:38:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1466. [2021-06-05 03:38:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.9938566552901023) internal successors, (5851), 1465 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5851 transitions. [2021-06-05 03:38:57,322 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5851 transitions. Word has length 25 [2021-06-05 03:38:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:57,323 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5851 transitions. [2021-06-05 03:38:57,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5851 transitions. [2021-06-05 03:38:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:57,325 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:57,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:57,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 03:38:57,326 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:57,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2102226275, now seen corresponding path program 55 times [2021-06-05 03:38:57,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:57,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305225676] [2021-06-05 03:38:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:57,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:57,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305225676] [2021-06-05 03:38:57,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305225676] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:57,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:57,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:57,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461483830] [2021-06-05 03:38:57,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:57,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:57,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:57,503 INFO L87 Difference]: Start difference. First operand 1466 states and 5851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:57,611 INFO L93 Difference]: Finished difference Result 3074 states and 11444 transitions. [2021-06-05 03:38:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:57,618 INFO L225 Difference]: With dead ends: 3074 [2021-06-05 03:38:57,618 INFO L226 Difference]: Without dead ends: 2915 [2021-06-05 03:38:57,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-06-05 03:38:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1514. [2021-06-05 03:38:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.9887640449438204) internal successors, (6035), 1513 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6035 transitions. [2021-06-05 03:38:57,740 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6035 transitions. Word has length 25 [2021-06-05 03:38:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:57,740 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6035 transitions. [2021-06-05 03:38:57,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6035 transitions. [2021-06-05 03:38:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:57,743 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:57,743 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:57,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 03:38:57,743 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:57,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1184443037, now seen corresponding path program 56 times [2021-06-05 03:38:57,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:57,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750434205] [2021-06-05 03:38:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:57,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:57,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750434205] [2021-06-05 03:38:57,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750434205] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:57,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:57,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:57,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090037681] [2021-06-05 03:38:57,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:57,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:57,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:57,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:57,929 INFO L87 Difference]: Start difference. First operand 1514 states and 6035 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:58,036 INFO L93 Difference]: Finished difference Result 3137 states and 11651 transitions. [2021-06-05 03:38:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:58,055 INFO L225 Difference]: With dead ends: 3137 [2021-06-05 03:38:58,056 INFO L226 Difference]: Without dead ends: 2883 [2021-06-05 03:38:58,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 179.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-06-05 03:38:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1482. [2021-06-05 03:38:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.988521269412559) internal successors, (5907), 1481 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2021-06-05 03:38:58,161 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2021-06-05 03:38:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:58,161 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2021-06-05 03:38:58,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2021-06-05 03:38:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:58,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:58,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:58,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 03:38:58,181 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:58,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2096473507, now seen corresponding path program 57 times [2021-06-05 03:38:58,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:58,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796309047] [2021-06-05 03:38:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:58,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:58,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796309047] [2021-06-05 03:38:58,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796309047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:58,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:58,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:58,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023818989] [2021-06-05 03:38:58,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:58,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:58,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:58,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:58,343 INFO L87 Difference]: Start difference. First operand 1482 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:58,445 INFO L93 Difference]: Finished difference Result 3019 states and 11233 transitions. [2021-06-05 03:38:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:58,452 INFO L225 Difference]: With dead ends: 3019 [2021-06-05 03:38:58,452 INFO L226 Difference]: Without dead ends: 2860 [2021-06-05 03:38:58,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-06-05 03:38:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1498. [2021-06-05 03:38:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9779559118236474) internal successors, (5955), 1497 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5955 transitions. [2021-06-05 03:38:58,510 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5955 transitions. Word has length 25 [2021-06-05 03:38:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:58,510 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5955 transitions. [2021-06-05 03:38:58,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5955 transitions. [2021-06-05 03:38:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:58,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:58,529 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:58,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 03:38:58,530 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -415976867, now seen corresponding path program 58 times [2021-06-05 03:38:58,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:58,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068072344] [2021-06-05 03:38:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:58,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:58,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068072344] [2021-06-05 03:38:58,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068072344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:58,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:58,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:58,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371649956] [2021-06-05 03:38:58,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:58,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:58,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:58,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:58,704 INFO L87 Difference]: Start difference. First operand 1498 states and 5955 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:58,821 INFO L93 Difference]: Finished difference Result 3043 states and 11309 transitions. [2021-06-05 03:38:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:58,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:58,828 INFO L225 Difference]: With dead ends: 3043 [2021-06-05 03:38:58,828 INFO L226 Difference]: Without dead ends: 2844 [2021-06-05 03:38:58,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2021-06-05 03:38:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 1482. [2021-06-05 03:38:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9831195138419986) internal successors, (5899), 1481 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5899 transitions. [2021-06-05 03:38:58,886 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5899 transitions. Word has length 25 [2021-06-05 03:38:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:58,887 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5899 transitions. [2021-06-05 03:38:58,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5899 transitions. [2021-06-05 03:38:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:58,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:58,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:58,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 03:38:58,891 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:58,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1272269405, now seen corresponding path program 59 times [2021-06-05 03:38:58,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:58,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199815555] [2021-06-05 03:38:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:59,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:59,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199815555] [2021-06-05 03:38:59,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199815555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:59,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:59,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:59,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627558361] [2021-06-05 03:38:59,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:59,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:59,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:59,118 INFO L87 Difference]: Start difference. First operand 1482 states and 5899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:59,242 INFO L93 Difference]: Finished difference Result 3134 states and 11656 transitions. [2021-06-05 03:38:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:59,249 INFO L225 Difference]: With dead ends: 3134 [2021-06-05 03:38:59,249 INFO L226 Difference]: Without dead ends: 2951 [2021-06-05 03:38:59,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-06-05 03:38:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1526. [2021-06-05 03:38:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 3.9678688524590164) internal successors, (6051), 1525 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6051 transitions. [2021-06-05 03:38:59,388 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6051 transitions. Word has length 25 [2021-06-05 03:38:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:59,388 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 6051 transitions. [2021-06-05 03:38:59,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6051 transitions. [2021-06-05 03:38:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:59,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:59,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:59,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 03:38:59,392 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash 267937467, now seen corresponding path program 60 times [2021-06-05 03:38:59,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:59,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837055822] [2021-06-05 03:38:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:59,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:59,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837055822] [2021-06-05 03:38:59,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837055822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:59,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:59,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:59,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581118736] [2021-06-05 03:38:59,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:59,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:59,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:59,581 INFO L87 Difference]: Start difference. First operand 1526 states and 6051 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:59,687 INFO L93 Difference]: Finished difference Result 3173 states and 11759 transitions. [2021-06-05 03:38:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:38:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:38:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:59,706 INFO L225 Difference]: With dead ends: 3173 [2021-06-05 03:38:59,707 INFO L226 Difference]: Without dead ends: 2891 [2021-06-05 03:38:59,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:38:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-06-05 03:38:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1466. [2021-06-05 03:38:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.98839590443686) internal successors, (5843), 1465 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5843 transitions. [2021-06-05 03:38:59,828 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5843 transitions. Word has length 25 [2021-06-05 03:38:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:59,829 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5843 transitions. [2021-06-05 03:38:59,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5843 transitions. [2021-06-05 03:38:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:38:59,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:59,832 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:59,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 03:38:59,832 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:59,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1734106623, now seen corresponding path program 61 times [2021-06-05 03:38:59,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:59,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368721552] [2021-06-05 03:38:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:59,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:59,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368721552] [2021-06-05 03:38:59,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368721552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:59,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:59,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:38:59,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085552628] [2021-06-05 03:38:59,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:38:59,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:59,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:38:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:59,976 INFO L87 Difference]: Start difference. First operand 1466 states and 5843 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:00,052 INFO L93 Difference]: Finished difference Result 2948 states and 10970 transitions. [2021-06-05 03:39:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:00,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:00,059 INFO L225 Difference]: With dead ends: 2948 [2021-06-05 03:39:00,059 INFO L226 Difference]: Without dead ends: 2789 [2021-06-05 03:39:00,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-06-05 03:39:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1490. [2021-06-05 03:39:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.9805238415043656) internal successors, (5927), 1489 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5927 transitions. [2021-06-05 03:39:00,114 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5927 transitions. Word has length 25 [2021-06-05 03:39:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:00,114 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5927 transitions. [2021-06-05 03:39:00,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5927 transitions. [2021-06-05 03:39:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:00,117 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:00,117 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:00,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 03:39:00,117 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:00,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1552562689, now seen corresponding path program 62 times [2021-06-05 03:39:00,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:00,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760588703] [2021-06-05 03:39:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:00,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:00,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760588703] [2021-06-05 03:39:00,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760588703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:00,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:00,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:00,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278626390] [2021-06-05 03:39:00,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:00,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:00,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:00,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:00,228 INFO L87 Difference]: Start difference. First operand 1490 states and 5927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:00,314 INFO L93 Difference]: Finished difference Result 2976 states and 11058 transitions. [2021-06-05 03:39:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:00,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:00,321 INFO L225 Difference]: With dead ends: 2976 [2021-06-05 03:39:00,322 INFO L226 Difference]: Without dead ends: 2773 [2021-06-05 03:39:00,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2021-06-05 03:39:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 1474. [2021-06-05 03:39:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9857433808553973) internal successors, (5871), 1473 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5871 transitions. [2021-06-05 03:39:00,376 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5871 transitions. Word has length 25 [2021-06-05 03:39:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:00,376 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5871 transitions. [2021-06-05 03:39:00,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5871 transitions. [2021-06-05 03:39:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:00,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:00,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:00,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 03:39:00,379 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash 887309661, now seen corresponding path program 63 times [2021-06-05 03:39:00,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:00,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714440941] [2021-06-05 03:39:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:00,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:00,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714440941] [2021-06-05 03:39:00,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714440941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:00,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:00,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:00,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732168155] [2021-06-05 03:39:00,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:00,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:00,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:00,479 INFO L87 Difference]: Start difference. First operand 1474 states and 5871 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:00,549 INFO L93 Difference]: Finished difference Result 2944 states and 10950 transitions. [2021-06-05 03:39:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:00,557 INFO L225 Difference]: With dead ends: 2944 [2021-06-05 03:39:00,557 INFO L226 Difference]: Without dead ends: 2785 [2021-06-05 03:39:00,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-06-05 03:39:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 1490. [2021-06-05 03:39:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.9751511081262594) internal successors, (5919), 1489 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5919 transitions. [2021-06-05 03:39:00,613 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5919 transitions. Word has length 25 [2021-06-05 03:39:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:00,614 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5919 transitions. [2021-06-05 03:39:00,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5919 transitions. [2021-06-05 03:39:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:00,617 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:00,617 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:00,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 03:39:00,617 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:00,617 INFO L82 PathProgramCache]: Analyzing trace with hash 857449983, now seen corresponding path program 64 times [2021-06-05 03:39:00,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:00,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171642680] [2021-06-05 03:39:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:00,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:00,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171642680] [2021-06-05 03:39:00,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171642680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:00,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:00,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:00,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321294463] [2021-06-05 03:39:00,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:00,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:00,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:00,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:00,716 INFO L87 Difference]: Start difference. First operand 1490 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:00,786 INFO L93 Difference]: Finished difference Result 2968 states and 11026 transitions. [2021-06-05 03:39:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:00,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:00,792 INFO L225 Difference]: With dead ends: 2968 [2021-06-05 03:39:00,792 INFO L226 Difference]: Without dead ends: 2769 [2021-06-05 03:39:00,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-06-05 03:39:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1474. [2021-06-05 03:39:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9803122878479296) internal successors, (5863), 1473 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5863 transitions. [2021-06-05 03:39:00,832 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5863 transitions. Word has length 25 [2021-06-05 03:39:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:00,833 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5863 transitions. [2021-06-05 03:39:00,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5863 transitions. [2021-06-05 03:39:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:00,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:00,835 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:00,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 03:39:00,835 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1502994945, now seen corresponding path program 65 times [2021-06-05 03:39:00,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:00,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538144210] [2021-06-05 03:39:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:00,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:00,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538144210] [2021-06-05 03:39:00,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538144210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:00,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:00,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:00,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093762597] [2021-06-05 03:39:00,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:00,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:00,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:00,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:00,931 INFO L87 Difference]: Start difference. First operand 1474 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:01,013 INFO L93 Difference]: Finished difference Result 3012 states and 11202 transitions. [2021-06-05 03:39:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:01,020 INFO L225 Difference]: With dead ends: 3012 [2021-06-05 03:39:01,021 INFO L226 Difference]: Without dead ends: 2825 [2021-06-05 03:39:01,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-06-05 03:39:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1502. [2021-06-05 03:39:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9646902065289806) internal successors, (5951), 1501 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5951 transitions. [2021-06-05 03:39:01,077 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5951 transitions. Word has length 25 [2021-06-05 03:39:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:01,077 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5951 transitions. [2021-06-05 03:39:01,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5951 transitions. [2021-06-05 03:39:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:01,080 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:01,080 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:01,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 03:39:01,080 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash 748635357, now seen corresponding path program 66 times [2021-06-05 03:39:01,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:01,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498133067] [2021-06-05 03:39:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:01,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:01,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498133067] [2021-06-05 03:39:01,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498133067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:01,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:01,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:01,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72772782] [2021-06-05 03:39:01,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:01,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:01,173 INFO L87 Difference]: Start difference. First operand 1502 states and 5951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:01,264 INFO L93 Difference]: Finished difference Result 3008 states and 11162 transitions. [2021-06-05 03:39:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:01,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:01,271 INFO L225 Difference]: With dead ends: 3008 [2021-06-05 03:39:01,271 INFO L226 Difference]: Without dead ends: 2789 [2021-06-05 03:39:01,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-06-05 03:39:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1466. [2021-06-05 03:39:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.9856655290102387) internal successors, (5839), 1465 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5839 transitions. [2021-06-05 03:39:01,330 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5839 transitions. Word has length 25 [2021-06-05 03:39:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:01,330 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5839 transitions. [2021-06-05 03:39:01,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5839 transitions. [2021-06-05 03:39:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:01,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:01,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:01,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 03:39:01,333 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1699001855, now seen corresponding path program 67 times [2021-06-05 03:39:01,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:01,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40108876] [2021-06-05 03:39:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:01,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:01,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40108876] [2021-06-05 03:39:01,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40108876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:01,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:01,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:01,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32296521] [2021-06-05 03:39:01,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:01,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:01,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:01,427 INFO L87 Difference]: Start difference. First operand 1466 states and 5839 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:01,503 INFO L93 Difference]: Finished difference Result 3147 states and 11741 transitions. [2021-06-05 03:39:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:01,511 INFO L225 Difference]: With dead ends: 3147 [2021-06-05 03:39:01,511 INFO L226 Difference]: Without dead ends: 2960 [2021-06-05 03:39:01,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2021-06-05 03:39:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1516. [2021-06-05 03:39:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.9788778877887787) internal successors, (6028), 1515 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 6028 transitions. [2021-06-05 03:39:01,570 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 6028 transitions. Word has length 25 [2021-06-05 03:39:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:01,570 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 6028 transitions. [2021-06-05 03:39:01,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 6028 transitions. [2021-06-05 03:39:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:01,573 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:01,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:01,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 03:39:01,573 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:01,574 INFO L82 PathProgramCache]: Analyzing trace with hash -344335139, now seen corresponding path program 68 times [2021-06-05 03:39:01,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:01,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014044925] [2021-06-05 03:39:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:01,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:01,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014044925] [2021-06-05 03:39:01,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014044925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:01,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:01,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:01,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533614424] [2021-06-05 03:39:01,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:01,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:01,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:01,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:01,670 INFO L87 Difference]: Start difference. First operand 1516 states and 6028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:01,751 INFO L93 Difference]: Finished difference Result 3143 states and 11701 transitions. [2021-06-05 03:39:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:01,758 INFO L225 Difference]: With dead ends: 3143 [2021-06-05 03:39:01,758 INFO L226 Difference]: Without dead ends: 2932 [2021-06-05 03:39:01,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-06-05 03:39:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1488. [2021-06-05 03:39:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.985205110961668) internal successors, (5926), 1487 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5926 transitions. [2021-06-05 03:39:01,817 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5926 transitions. Word has length 25 [2021-06-05 03:39:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:01,817 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5926 transitions. [2021-06-05 03:39:01,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5926 transitions. [2021-06-05 03:39:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:01,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:01,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:01,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 03:39:01,820 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1391316259, now seen corresponding path program 69 times [2021-06-05 03:39:01,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:01,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642828754] [2021-06-05 03:39:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:01,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:01,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642828754] [2021-06-05 03:39:01,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642828754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:01,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:01,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:01,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946138879] [2021-06-05 03:39:01,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:01,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:01,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:01,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:01,919 INFO L87 Difference]: Start difference. First operand 1488 states and 5926 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:02,005 INFO L93 Difference]: Finished difference Result 3204 states and 11929 transitions. [2021-06-05 03:39:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:02,013 INFO L225 Difference]: With dead ends: 3204 [2021-06-05 03:39:02,013 INFO L226 Difference]: Without dead ends: 3017 [2021-06-05 03:39:02,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2021-06-05 03:39:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1534. [2021-06-05 03:39:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 3.9680365296803655) internal successors, (6083), 1533 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 6083 transitions. [2021-06-05 03:39:02,071 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 6083 transitions. Word has length 25 [2021-06-05 03:39:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:02,071 INFO L482 AbstractCegarLoop]: Abstraction has 1534 states and 6083 transitions. [2021-06-05 03:39:02,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 6083 transitions. [2021-06-05 03:39:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:02,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:02,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:02,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 03:39:02,075 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:02,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1310426403, now seen corresponding path program 70 times [2021-06-05 03:39:02,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:02,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639939761] [2021-06-05 03:39:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:02,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:02,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639939761] [2021-06-05 03:39:02,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639939761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:02,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:02,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:02,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951819180] [2021-06-05 03:39:02,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:02,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:02,172 INFO L87 Difference]: Start difference. First operand 1534 states and 6083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:02,247 INFO L93 Difference]: Finished difference Result 3239 states and 12018 transitions. [2021-06-05 03:39:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:02,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:02,255 INFO L225 Difference]: With dead ends: 3239 [2021-06-05 03:39:02,255 INFO L226 Difference]: Without dead ends: 2971 [2021-06-05 03:39:02,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-06-05 03:39:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1488. [2021-06-05 03:39:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9704102219233355) internal successors, (5904), 1487 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5904 transitions. [2021-06-05 03:39:02,316 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5904 transitions. Word has length 25 [2021-06-05 03:39:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:02,316 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5904 transitions. [2021-06-05 03:39:02,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5904 transitions. [2021-06-05 03:39:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:02,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:02,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:02,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 03:39:02,320 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:02,320 INFO L82 PathProgramCache]: Analyzing trace with hash -408968645, now seen corresponding path program 71 times [2021-06-05 03:39:02,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:02,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311397423] [2021-06-05 03:39:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:02,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:02,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311397423] [2021-06-05 03:39:02,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311397423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:02,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:02,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:02,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364556687] [2021-06-05 03:39:02,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:02,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:02,429 INFO L87 Difference]: Start difference. First operand 1488 states and 5904 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:02,519 INFO L93 Difference]: Finished difference Result 3194 states and 11876 transitions. [2021-06-05 03:39:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:02,527 INFO L225 Difference]: With dead ends: 3194 [2021-06-05 03:39:02,528 INFO L226 Difference]: Without dead ends: 3011 [2021-06-05 03:39:02,528 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-06-05 03:39:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1532. [2021-06-05 03:39:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.955584585238406) internal successors, (6056), 1531 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 6056 transitions. [2021-06-05 03:39:02,611 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 6056 transitions. Word has length 25 [2021-06-05 03:39:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:02,611 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 6056 transitions. [2021-06-05 03:39:02,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 6056 transitions. [2021-06-05 03:39:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:02,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:02,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:02,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 03:39:02,614 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:02,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:02,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1478487651, now seen corresponding path program 72 times [2021-06-05 03:39:02,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:02,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122506643] [2021-06-05 03:39:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:02,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:02,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122506643] [2021-06-05 03:39:02,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122506643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:02,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:02,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:02,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345906569] [2021-06-05 03:39:02,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:02,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:02,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:02,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:02,721 INFO L87 Difference]: Start difference. First operand 1532 states and 6056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:02,792 INFO L93 Difference]: Finished difference Result 3233 states and 11979 transitions. [2021-06-05 03:39:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:02,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:02,798 INFO L225 Difference]: With dead ends: 3233 [2021-06-05 03:39:02,798 INFO L226 Difference]: Without dead ends: 2937 [2021-06-05 03:39:02,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2021-06-05 03:39:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1458. [2021-06-05 03:39:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9910775566231984) internal successors, (5815), 1457 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5815 transitions. [2021-06-05 03:39:02,842 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5815 transitions. Word has length 25 [2021-06-05 03:39:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:02,842 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5815 transitions. [2021-06-05 03:39:02,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5815 transitions. [2021-06-05 03:39:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:02,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:02,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:02,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 03:39:02,845 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2109839913, now seen corresponding path program 73 times [2021-06-05 03:39:02,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:02,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548814341] [2021-06-05 03:39:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:02,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:02,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548814341] [2021-06-05 03:39:02,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548814341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:02,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:02,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:02,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170494065] [2021-06-05 03:39:02,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:02,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:02,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:02,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:02,955 INFO L87 Difference]: Start difference. First operand 1458 states and 5815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:03,021 INFO L93 Difference]: Finished difference Result 2849 states and 10577 transitions. [2021-06-05 03:39:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:03,027 INFO L225 Difference]: With dead ends: 2849 [2021-06-05 03:39:03,027 INFO L226 Difference]: Without dead ends: 2690 [2021-06-05 03:39:03,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-06-05 03:39:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1486. [2021-06-05 03:39:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.985858585858586) internal successors, (5919), 1485 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5919 transitions. [2021-06-05 03:39:03,076 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5919 transitions. Word has length 25 [2021-06-05 03:39:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:03,076 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5919 transitions. [2021-06-05 03:39:03,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5919 transitions. [2021-06-05 03:39:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:03,079 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:03,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:03,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 03:39:03,079 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash 595192633, now seen corresponding path program 74 times [2021-06-05 03:39:03,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:03,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331648893] [2021-06-05 03:39:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:03,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:03,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331648893] [2021-06-05 03:39:03,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331648893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:03,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:03,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:03,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408015406] [2021-06-05 03:39:03,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:03,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:03,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:03,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:03,192 INFO L87 Difference]: Start difference. First operand 1486 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:03,278 INFO L93 Difference]: Finished difference Result 2879 states and 10670 transitions. [2021-06-05 03:39:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:03,283 INFO L225 Difference]: With dead ends: 2879 [2021-06-05 03:39:03,283 INFO L226 Difference]: Without dead ends: 2674 [2021-06-05 03:39:03,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-06-05 03:39:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1470. [2021-06-05 03:39:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9911504424778763) internal successors, (5863), 1469 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5863 transitions. [2021-06-05 03:39:03,323 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5863 transitions. Word has length 25 [2021-06-05 03:39:03,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:03,323 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5863 transitions. [2021-06-05 03:39:03,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5863 transitions. [2021-06-05 03:39:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:03,326 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:03,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:03,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 03:39:03,326 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1028777287, now seen corresponding path program 75 times [2021-06-05 03:39:03,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:03,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496367452] [2021-06-05 03:39:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:03,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:03,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496367452] [2021-06-05 03:39:03,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496367452] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:03,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:03,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:03,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880959852] [2021-06-05 03:39:03,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:03,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:03,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:03,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:03,442 INFO L87 Difference]: Start difference. First operand 1470 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:03,505 INFO L93 Difference]: Finished difference Result 2847 states and 10564 transitions. [2021-06-05 03:39:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:03,512 INFO L225 Difference]: With dead ends: 2847 [2021-06-05 03:39:03,512 INFO L226 Difference]: Without dead ends: 2688 [2021-06-05 03:39:03,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:03,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-06-05 03:39:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1486. [2021-06-05 03:39:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9804713804713803) internal successors, (5911), 1485 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2021-06-05 03:39:03,568 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2021-06-05 03:39:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:03,568 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2021-06-05 03:39:03,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2021-06-05 03:39:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:03,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:03,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:03,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 03:39:03,571 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:03,572 INFO L82 PathProgramCache]: Analyzing trace with hash -20479303, now seen corresponding path program 76 times [2021-06-05 03:39:03,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:03,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520492533] [2021-06-05 03:39:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:03,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:03,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520492533] [2021-06-05 03:39:03,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520492533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:03,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:03,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:03,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764974778] [2021-06-05 03:39:03,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:03,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:03,688 INFO L87 Difference]: Start difference. First operand 1486 states and 5911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:03,778 INFO L93 Difference]: Finished difference Result 2875 states and 10652 transitions. [2021-06-05 03:39:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:03,783 INFO L225 Difference]: With dead ends: 2875 [2021-06-05 03:39:03,783 INFO L226 Difference]: Without dead ends: 2672 [2021-06-05 03:39:03,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-06-05 03:39:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1470. [2021-06-05 03:39:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9857045609257997) internal successors, (5855), 1469 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2021-06-05 03:39:03,824 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2021-06-05 03:39:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:03,824 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2021-06-05 03:39:03,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2021-06-05 03:39:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:03,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:03,827 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:03,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 03:39:03,827 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash 388384667, now seen corresponding path program 77 times [2021-06-05 03:39:03,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:03,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95838080] [2021-06-05 03:39:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:03,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:03,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95838080] [2021-06-05 03:39:03,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95838080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:03,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:03,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:03,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047970933] [2021-06-05 03:39:03,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:03,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:03,931 INFO L87 Difference]: Start difference. First operand 1470 states and 5855 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:04,018 INFO L93 Difference]: Finished difference Result 2921 states and 10833 transitions. [2021-06-05 03:39:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:04,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:04,025 INFO L225 Difference]: With dead ends: 2921 [2021-06-05 03:39:04,025 INFO L226 Difference]: Without dead ends: 2732 [2021-06-05 03:39:04,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-06-05 03:39:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1500. [2021-06-05 03:39:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.9679786524349567) internal successors, (5948), 1499 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5948 transitions. [2021-06-05 03:39:04,083 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5948 transitions. Word has length 25 [2021-06-05 03:39:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:04,083 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5948 transitions. [2021-06-05 03:39:04,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5948 transitions. [2021-06-05 03:39:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:04,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:04,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:04,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 03:39:04,087 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1654952327, now seen corresponding path program 78 times [2021-06-05 03:39:04,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:04,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987418214] [2021-06-05 03:39:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:04,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:04,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987418214] [2021-06-05 03:39:04,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987418214] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:04,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:04,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:04,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845750751] [2021-06-05 03:39:04,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:04,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:04,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:04,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:04,209 INFO L87 Difference]: Start difference. First operand 1500 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:04,294 INFO L93 Difference]: Finished difference Result 2919 states and 10798 transitions. [2021-06-05 03:39:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:04,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:04,301 INFO L225 Difference]: With dead ends: 2919 [2021-06-05 03:39:04,302 INFO L226 Difference]: Without dead ends: 2694 [2021-06-05 03:39:04,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-06-05 03:39:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1462. [2021-06-05 03:39:04,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9911019849418206) internal successors, (5831), 1461 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5831 transitions. [2021-06-05 03:39:04,358 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5831 transitions. Word has length 25 [2021-06-05 03:39:04,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:04,358 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5831 transitions. [2021-06-05 03:39:04,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5831 transitions. [2021-06-05 03:39:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:04,361 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:04,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:04,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 03:39:04,361 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:04,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1704225337, now seen corresponding path program 79 times [2021-06-05 03:39:04,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:04,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201046182] [2021-06-05 03:39:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:04,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:04,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201046182] [2021-06-05 03:39:04,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201046182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:04,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:04,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:04,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489395358] [2021-06-05 03:39:04,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:04,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:04,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:04,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:04,465 INFO L87 Difference]: Start difference. First operand 1462 states and 5831 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:04,524 INFO L93 Difference]: Finished difference Result 2843 states and 10554 transitions. [2021-06-05 03:39:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:04,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:04,530 INFO L225 Difference]: With dead ends: 2843 [2021-06-05 03:39:04,530 INFO L226 Difference]: Without dead ends: 2684 [2021-06-05 03:39:04,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-06-05 03:39:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1486. [2021-06-05 03:39:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.983164983164983) internal successors, (5915), 1485 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5915 transitions. [2021-06-05 03:39:04,579 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5915 transitions. Word has length 25 [2021-06-05 03:39:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:04,579 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5915 transitions. [2021-06-05 03:39:04,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5915 transitions. [2021-06-05 03:39:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:04,582 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:04,582 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:04,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 03:39:04,582 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash 114290587, now seen corresponding path program 80 times [2021-06-05 03:39:04,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:04,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196219733] [2021-06-05 03:39:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:04,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:04,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196219733] [2021-06-05 03:39:04,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196219733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:04,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:04,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:04,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538933790] [2021-06-05 03:39:04,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:04,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:04,687 INFO L87 Difference]: Start difference. First operand 1486 states and 5915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:04,759 INFO L93 Difference]: Finished difference Result 2873 states and 10647 transitions. [2021-06-05 03:39:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:04,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:04,765 INFO L225 Difference]: With dead ends: 2873 [2021-06-05 03:39:04,765 INFO L226 Difference]: Without dead ends: 2668 [2021-06-05 03:39:04,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-06-05 03:39:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1470. [2021-06-05 03:39:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.988427501701838) internal successors, (5859), 1469 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5859 transitions. [2021-06-05 03:39:04,814 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5859 transitions. Word has length 25 [2021-06-05 03:39:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:04,814 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5859 transitions. [2021-06-05 03:39:04,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5859 transitions. [2021-06-05 03:39:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:04,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:04,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:04,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 03:39:04,818 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash 15979065, now seen corresponding path program 81 times [2021-06-05 03:39:04,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:04,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116976008] [2021-06-05 03:39:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:04,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:04,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116976008] [2021-06-05 03:39:04,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116976008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:04,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:04,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640993720] [2021-06-05 03:39:04,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:04,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:04,916 INFO L87 Difference]: Start difference. First operand 1470 states and 5859 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:04,978 INFO L93 Difference]: Finished difference Result 2837 states and 10529 transitions. [2021-06-05 03:39:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:04,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:04,983 INFO L225 Difference]: With dead ends: 2837 [2021-06-05 03:39:04,983 INFO L226 Difference]: Without dead ends: 2678 [2021-06-05 03:39:04,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-06-05 03:39:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1486. [2021-06-05 03:39:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.977777777777778) internal successors, (5907), 1485 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5907 transitions. [2021-06-05 03:39:05,026 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5907 transitions. Word has length 25 [2021-06-05 03:39:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:05,026 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5907 transitions. [2021-06-05 03:39:05,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5907 transitions. [2021-06-05 03:39:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:05,029 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:05,029 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:05,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 03:39:05,029 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1696475705, now seen corresponding path program 82 times [2021-06-05 03:39:05,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:05,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054042343] [2021-06-05 03:39:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:05,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:05,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054042343] [2021-06-05 03:39:05,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054042343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:05,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:05,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:05,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755573299] [2021-06-05 03:39:05,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:05,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:05,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:05,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:05,123 INFO L87 Difference]: Start difference. First operand 1486 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:05,199 INFO L93 Difference]: Finished difference Result 2861 states and 10605 transitions. [2021-06-05 03:39:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:05,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:05,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:05,204 INFO L225 Difference]: With dead ends: 2861 [2021-06-05 03:39:05,204 INFO L226 Difference]: Without dead ends: 2662 [2021-06-05 03:39:05,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-06-05 03:39:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 1470. [2021-06-05 03:39:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.982981620149762) internal successors, (5851), 1469 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5851 transitions. [2021-06-05 03:39:05,249 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5851 transitions. Word has length 25 [2021-06-05 03:39:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:05,249 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5851 transitions. [2021-06-05 03:39:05,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5851 transitions. [2021-06-05 03:39:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:05,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:05,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:05,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 03:39:05,253 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1433141019, now seen corresponding path program 83 times [2021-06-05 03:39:05,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:05,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394531802] [2021-06-05 03:39:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:05,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:05,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394531802] [2021-06-05 03:39:05,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394531802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:05,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:05,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:05,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898098011] [2021-06-05 03:39:05,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:05,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:05,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:05,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:05,354 INFO L87 Difference]: Start difference. First operand 1470 states and 5851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:05,417 INFO L93 Difference]: Finished difference Result 2909 states and 10791 transitions. [2021-06-05 03:39:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:05,423 INFO L225 Difference]: With dead ends: 2909 [2021-06-05 03:39:05,423 INFO L226 Difference]: Without dead ends: 2720 [2021-06-05 03:39:05,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-06-05 03:39:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1498. [2021-06-05 03:39:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.967267869071476) internal successors, (5939), 1497 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5939 transitions. [2021-06-05 03:39:05,496 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5939 transitions. Word has length 25 [2021-06-05 03:39:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:05,496 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5939 transitions. [2021-06-05 03:39:05,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5939 transitions. [2021-06-05 03:39:05,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:05,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:05,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:05,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 03:39:05,499 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash 40996473, now seen corresponding path program 84 times [2021-06-05 03:39:05,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:05,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901625597] [2021-06-05 03:39:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:05,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:05,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901625597] [2021-06-05 03:39:05,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901625597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:05,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:05,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:05,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989220681] [2021-06-05 03:39:05,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:05,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:05,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:05,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:05,593 INFO L87 Difference]: Start difference. First operand 1498 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:05,672 INFO L93 Difference]: Finished difference Result 2903 states and 10746 transitions. [2021-06-05 03:39:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:05,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:05,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:05,679 INFO L225 Difference]: With dead ends: 2903 [2021-06-05 03:39:05,679 INFO L226 Difference]: Without dead ends: 2684 [2021-06-05 03:39:05,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-06-05 03:39:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1462. [2021-06-05 03:39:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9883641341546885) internal successors, (5827), 1461 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5827 transitions. [2021-06-05 03:39:05,734 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5827 transitions. Word has length 25 [2021-06-05 03:39:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:05,734 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5827 transitions. [2021-06-05 03:39:05,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5827 transitions. [2021-06-05 03:39:05,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:05,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:05,737 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:05,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 03:39:05,738 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:05,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2092230299, now seen corresponding path program 85 times [2021-06-05 03:39:05,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:05,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664575371] [2021-06-05 03:39:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:05,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:05,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664575371] [2021-06-05 03:39:05,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664575371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:05,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:05,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:05,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482729721] [2021-06-05 03:39:05,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:05,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:05,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:05,848 INFO L87 Difference]: Start difference. First operand 1462 states and 5827 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:05,910 INFO L93 Difference]: Finished difference Result 2839 states and 10540 transitions. [2021-06-05 03:39:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:05,917 INFO L225 Difference]: With dead ends: 2839 [2021-06-05 03:39:05,918 INFO L226 Difference]: Without dead ends: 2680 [2021-06-05 03:39:05,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-06-05 03:39:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1486. [2021-06-05 03:39:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9804713804713803) internal successors, (5911), 1485 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2021-06-05 03:39:05,974 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2021-06-05 03:39:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:05,974 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2021-06-05 03:39:05,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2021-06-05 03:39:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:05,977 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:05,977 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:05,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 03:39:05,977 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:05,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1194439013, now seen corresponding path program 86 times [2021-06-05 03:39:05,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:05,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754465116] [2021-06-05 03:39:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:06,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:06,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754465116] [2021-06-05 03:39:06,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754465116] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:06,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:06,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:06,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445574068] [2021-06-05 03:39:06,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:06,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:06,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:06,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:06,088 INFO L87 Difference]: Start difference. First operand 1486 states and 5911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:06,173 INFO L93 Difference]: Finished difference Result 2867 states and 10628 transitions. [2021-06-05 03:39:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:06,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:06,180 INFO L225 Difference]: With dead ends: 2867 [2021-06-05 03:39:06,180 INFO L226 Difference]: Without dead ends: 2664 [2021-06-05 03:39:06,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-06-05 03:39:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1470. [2021-06-05 03:39:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9857045609257997) internal successors, (5855), 1469 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2021-06-05 03:39:06,237 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2021-06-05 03:39:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:06,237 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2021-06-05 03:39:06,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2021-06-05 03:39:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:06,240 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:06,240 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:06,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 03:39:06,240 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:06,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1245433337, now seen corresponding path program 87 times [2021-06-05 03:39:06,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:06,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382553780] [2021-06-05 03:39:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:06,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:06,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382553780] [2021-06-05 03:39:06,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382553780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:06,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:06,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:06,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321992036] [2021-06-05 03:39:06,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:06,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:06,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:06,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:06,339 INFO L87 Difference]: Start difference. First operand 1470 states and 5855 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:06,409 INFO L93 Difference]: Finished difference Result 2835 states and 10520 transitions. [2021-06-05 03:39:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:06,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:06,416 INFO L225 Difference]: With dead ends: 2835 [2021-06-05 03:39:06,417 INFO L226 Difference]: Without dead ends: 2676 [2021-06-05 03:39:06,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-06-05 03:39:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 1486. [2021-06-05 03:39:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.975084175084175) internal successors, (5903), 1485 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5903 transitions. [2021-06-05 03:39:06,474 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5903 transitions. Word has length 25 [2021-06-05 03:39:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:06,474 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5903 transitions. [2021-06-05 03:39:06,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5903 transitions. [2021-06-05 03:39:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:06,477 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:06,477 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:06,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 03:39:06,478 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:06,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1215573659, now seen corresponding path program 88 times [2021-06-05 03:39:06,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:06,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793647881] [2021-06-05 03:39:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:06,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:06,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793647881] [2021-06-05 03:39:06,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793647881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:06,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:06,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:06,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67324914] [2021-06-05 03:39:06,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:06,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:06,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:06,575 INFO L87 Difference]: Start difference. First operand 1486 states and 5903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:06,673 INFO L93 Difference]: Finished difference Result 2859 states and 10596 transitions. [2021-06-05 03:39:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:06,678 INFO L225 Difference]: With dead ends: 2859 [2021-06-05 03:39:06,679 INFO L226 Difference]: Without dead ends: 2660 [2021-06-05 03:39:06,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-06-05 03:39:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1470. [2021-06-05 03:39:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9802586793737236) internal successors, (5847), 1469 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5847 transitions. [2021-06-05 03:39:06,722 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5847 transitions. Word has length 25 [2021-06-05 03:39:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:06,722 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5847 transitions. [2021-06-05 03:39:06,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5847 transitions. [2021-06-05 03:39:06,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:06,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:06,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:06,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 03:39:06,725 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:06,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:06,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1144871269, now seen corresponding path program 89 times [2021-06-05 03:39:06,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:06,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758764404] [2021-06-05 03:39:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:06,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:06,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758764404] [2021-06-05 03:39:06,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758764404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:06,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:06,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:06,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180755242] [2021-06-05 03:39:06,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:06,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:06,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:06,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:06,819 INFO L87 Difference]: Start difference. First operand 1470 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:06,905 INFO L93 Difference]: Finished difference Result 2903 states and 10772 transitions. [2021-06-05 03:39:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:06,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:06,916 INFO L225 Difference]: With dead ends: 2903 [2021-06-05 03:39:06,916 INFO L226 Difference]: Without dead ends: 2716 [2021-06-05 03:39:06,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-06-05 03:39:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1498. [2021-06-05 03:39:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9645958583834333) internal successors, (5935), 1497 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5935 transitions. [2021-06-05 03:39:06,973 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5935 transitions. Word has length 25 [2021-06-05 03:39:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:06,973 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5935 transitions. [2021-06-05 03:39:06,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5935 transitions. [2021-06-05 03:39:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:06,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:06,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:06,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 03:39:06,977 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759033, now seen corresponding path program 90 times [2021-06-05 03:39:06,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:06,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418786199] [2021-06-05 03:39:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:07,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:07,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418786199] [2021-06-05 03:39:07,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418786199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:07,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:07,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:07,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319100125] [2021-06-05 03:39:07,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:07,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:07,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:07,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:07,075 INFO L87 Difference]: Start difference. First operand 1498 states and 5935 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:07,157 INFO L93 Difference]: Finished difference Result 2899 states and 10732 transitions. [2021-06-05 03:39:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:07,164 INFO L225 Difference]: With dead ends: 2899 [2021-06-05 03:39:07,165 INFO L226 Difference]: Without dead ends: 2680 [2021-06-05 03:39:07,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-06-05 03:39:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1462. [2021-06-05 03:39:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9856262833675564) internal successors, (5823), 1461 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5823 transitions. [2021-06-05 03:39:07,220 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5823 transitions. Word has length 25 [2021-06-05 03:39:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:07,220 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5823 transitions. [2021-06-05 03:39:07,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5823 transitions. [2021-06-05 03:39:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:07,223 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:07,223 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:07,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 03:39:07,223 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:07,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:07,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1478632707, now seen corresponding path program 91 times [2021-06-05 03:39:07,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:07,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930111395] [2021-06-05 03:39:07,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:07,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:07,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930111395] [2021-06-05 03:39:07,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930111395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:07,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:07,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:07,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31490776] [2021-06-05 03:39:07,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:07,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:07,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:07,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:07,324 INFO L87 Difference]: Start difference. First operand 1462 states and 5823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:07,397 INFO L93 Difference]: Finished difference Result 2975 states and 11062 transitions. [2021-06-05 03:39:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:07,403 INFO L225 Difference]: With dead ends: 2975 [2021-06-05 03:39:07,403 INFO L226 Difference]: Without dead ends: 2786 [2021-06-05 03:39:07,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-06-05 03:39:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1506. [2021-06-05 03:39:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9740863787375416) internal successors, (5981), 1505 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5981 transitions. [2021-06-05 03:39:07,444 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5981 transitions. Word has length 25 [2021-06-05 03:39:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:07,444 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5981 transitions. [2021-06-05 03:39:07,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5981 transitions. [2021-06-05 03:39:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:07,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:07,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:07,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 03:39:07,447 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:07,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:07,447 INFO L82 PathProgramCache]: Analyzing trace with hash 772997595, now seen corresponding path program 92 times [2021-06-05 03:39:07,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:07,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869618209] [2021-06-05 03:39:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:07,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:07,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869618209] [2021-06-05 03:39:07,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869618209] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:07,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:07,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:07,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166927211] [2021-06-05 03:39:07,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:07,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:07,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:07,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:07,540 INFO L87 Difference]: Start difference. First operand 1506 states and 5981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:07,629 INFO L93 Difference]: Finished difference Result 2973 states and 11027 transitions. [2021-06-05 03:39:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:07,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:07,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:07,636 INFO L225 Difference]: With dead ends: 2973 [2021-06-05 03:39:07,636 INFO L226 Difference]: Without dead ends: 2756 [2021-06-05 03:39:07,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-06-05 03:39:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1476. [2021-06-05 03:39:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.982372881355932) internal successors, (5874), 1475 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5874 transitions. [2021-06-05 03:39:07,676 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5874 transitions. Word has length 25 [2021-06-05 03:39:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:07,676 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5874 transitions. [2021-06-05 03:39:07,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5874 transitions. [2021-06-05 03:39:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:07,678 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:07,678 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:07,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 03:39:07,678 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1969537627, now seen corresponding path program 93 times [2021-06-05 03:39:07,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:07,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706653904] [2021-06-05 03:39:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:07,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:07,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706653904] [2021-06-05 03:39:07,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706653904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:07,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:07,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:07,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192718168] [2021-06-05 03:39:07,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:07,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:07,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:07,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:07,773 INFO L87 Difference]: Start difference. First operand 1476 states and 5874 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:07,854 INFO L93 Difference]: Finished difference Result 2969 states and 11029 transitions. [2021-06-05 03:39:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:07,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:07,860 INFO L225 Difference]: With dead ends: 2969 [2021-06-05 03:39:07,860 INFO L226 Difference]: Without dead ends: 2780 [2021-06-05 03:39:07,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:07,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-06-05 03:39:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 1504. [2021-06-05 03:39:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9667332002661344) internal successors, (5962), 1503 states have internal predecessors, (5962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5962 transitions. [2021-06-05 03:39:07,899 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5962 transitions. Word has length 25 [2021-06-05 03:39:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:07,900 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5962 transitions. [2021-06-05 03:39:07,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5962 transitions. [2021-06-05 03:39:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:07,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:07,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:07,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 03:39:07,902 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:07,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1132963237, now seen corresponding path program 94 times [2021-06-05 03:39:07,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:07,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110112469] [2021-06-05 03:39:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:07,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:07,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110112469] [2021-06-05 03:39:07,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110112469] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:07,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:07,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:07,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216673517] [2021-06-05 03:39:07,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:07,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:07,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:07,996 INFO L87 Difference]: Start difference. First operand 1504 states and 5962 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:08,076 INFO L93 Difference]: Finished difference Result 2963 states and 10984 transitions. [2021-06-05 03:39:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:08,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:08,082 INFO L225 Difference]: With dead ends: 2963 [2021-06-05 03:39:08,082 INFO L226 Difference]: Without dead ends: 2752 [2021-06-05 03:39:08,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-06-05 03:39:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 1476. [2021-06-05 03:39:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.9728813559322034) internal successors, (5860), 1475 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5860 transitions. [2021-06-05 03:39:08,122 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5860 transitions. Word has length 25 [2021-06-05 03:39:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:08,122 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5860 transitions. [2021-06-05 03:39:08,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5860 transitions. [2021-06-05 03:39:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:08,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:08,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:08,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 03:39:08,125 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1343082055, now seen corresponding path program 95 times [2021-06-05 03:39:08,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:08,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206076239] [2021-06-05 03:39:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:08,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:08,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206076239] [2021-06-05 03:39:08,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206076239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:08,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:08,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:08,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572536506] [2021-06-05 03:39:08,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:08,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:08,218 INFO L87 Difference]: Start difference. First operand 1476 states and 5860 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:08,286 INFO L93 Difference]: Finished difference Result 2965 states and 11005 transitions. [2021-06-05 03:39:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:08,291 INFO L225 Difference]: With dead ends: 2965 [2021-06-05 03:39:08,291 INFO L226 Difference]: Without dead ends: 2778 [2021-06-05 03:39:08,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-06-05 03:39:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1504. [2021-06-05 03:39:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9574184963406522) internal successors, (5948), 1503 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5948 transitions. [2021-06-05 03:39:08,331 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5948 transitions. Word has length 25 [2021-06-05 03:39:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:08,331 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5948 transitions. [2021-06-05 03:39:08,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5948 transitions. [2021-06-05 03:39:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:08,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:08,337 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:08,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 03:39:08,337 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash -262019429, now seen corresponding path program 96 times [2021-06-05 03:39:08,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:08,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017240986] [2021-06-05 03:39:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:08,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:08,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017240986] [2021-06-05 03:39:08,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017240986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:08,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:08,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:08,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881940085] [2021-06-05 03:39:08,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:08,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:08,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:08,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:08,436 INFO L87 Difference]: Start difference. First operand 1504 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:08,531 INFO L93 Difference]: Finished difference Result 2961 states and 10965 transitions. [2021-06-05 03:39:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:08,538 INFO L225 Difference]: With dead ends: 2961 [2021-06-05 03:39:08,539 INFO L226 Difference]: Without dead ends: 2732 [2021-06-05 03:39:08,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-06-05 03:39:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1458. [2021-06-05 03:39:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9897048730267675) internal successors, (5813), 1457 states have internal predecessors, (5813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5813 transitions. [2021-06-05 03:39:08,594 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5813 transitions. Word has length 25 [2021-06-05 03:39:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:08,594 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5813 transitions. [2021-06-05 03:39:08,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5813 transitions. [2021-06-05 03:39:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:08,597 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:08,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:08,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 03:39:08,597 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:08,597 INFO L82 PathProgramCache]: Analyzing trace with hash 847937503, now seen corresponding path program 97 times [2021-06-05 03:39:08,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:08,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654723961] [2021-06-05 03:39:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:08,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:08,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654723961] [2021-06-05 03:39:08,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654723961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:08,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:08,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:08,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047957669] [2021-06-05 03:39:08,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:08,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:08,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:08,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:08,692 INFO L87 Difference]: Start difference. First operand 1458 states and 5813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:08,754 INFO L93 Difference]: Finished difference Result 3229 states and 12055 transitions. [2021-06-05 03:39:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:08,761 INFO L225 Difference]: With dead ends: 3229 [2021-06-05 03:39:08,761 INFO L226 Difference]: Without dead ends: 3040 [2021-06-05 03:39:08,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-06-05 03:39:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1525. [2021-06-05 03:39:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 3.9783464566929134) internal successors, (6063), 1524 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 6063 transitions. [2021-06-05 03:39:08,805 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 6063 transitions. Word has length 25 [2021-06-05 03:39:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:08,805 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 6063 transitions. [2021-06-05 03:39:08,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 6063 transitions. [2021-06-05 03:39:08,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:08,808 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:08,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:08,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 03:39:08,808 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1195399491, now seen corresponding path program 98 times [2021-06-05 03:39:08,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:08,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887304951] [2021-06-05 03:39:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:08,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:08,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887304951] [2021-06-05 03:39:08,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887304951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:08,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:08,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:08,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929715964] [2021-06-05 03:39:08,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:08,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:08,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:08,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:08,902 INFO L87 Difference]: Start difference. First operand 1525 states and 6063 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:08,980 INFO L93 Difference]: Finished difference Result 3227 states and 12020 transitions. [2021-06-05 03:39:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:08,986 INFO L225 Difference]: With dead ends: 3227 [2021-06-05 03:39:08,986 INFO L226 Difference]: Without dead ends: 3010 [2021-06-05 03:39:08,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-06-05 03:39:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1495. [2021-06-05 03:39:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 3.9866131191432395) internal successors, (5956), 1494 states have internal predecessors, (5956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5956 transitions. [2021-06-05 03:39:09,033 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5956 transitions. Word has length 25 [2021-06-05 03:39:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:09,033 INFO L482 AbstractCegarLoop]: Abstraction has 1495 states and 5956 transitions. [2021-06-05 03:39:09,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5956 transitions. [2021-06-05 03:39:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:09,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:09,035 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:09,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 03:39:09,035 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1140541, now seen corresponding path program 99 times [2021-06-05 03:39:09,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:09,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907590989] [2021-06-05 03:39:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:09,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:09,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907590989] [2021-06-05 03:39:09,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907590989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:09,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:09,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:09,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144028976] [2021-06-05 03:39:09,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:09,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:09,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:09,127 INFO L87 Difference]: Start difference. First operand 1495 states and 5956 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:09,188 INFO L93 Difference]: Finished difference Result 3223 states and 12022 transitions. [2021-06-05 03:39:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:09,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:09,194 INFO L225 Difference]: With dead ends: 3223 [2021-06-05 03:39:09,194 INFO L226 Difference]: Without dead ends: 3034 [2021-06-05 03:39:09,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2021-06-05 03:39:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1523. [2021-06-05 03:39:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 3.971090670170828) internal successors, (6044), 1522 states have internal predecessors, (6044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6044 transitions. [2021-06-05 03:39:09,236 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6044 transitions. Word has length 25 [2021-06-05 03:39:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:09,236 INFO L482 AbstractCegarLoop]: Abstraction has 1523 states and 6044 transitions. [2021-06-05 03:39:09,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6044 transitions. [2021-06-05 03:39:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:09,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:09,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:09,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 03:39:09,238 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:09,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1193606973, now seen corresponding path program 100 times [2021-06-05 03:39:09,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:09,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319082173] [2021-06-05 03:39:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:09,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:09,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319082173] [2021-06-05 03:39:09,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319082173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:09,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:09,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:09,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888749792] [2021-06-05 03:39:09,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:09,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:09,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:09,326 INFO L87 Difference]: Start difference. First operand 1523 states and 6044 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:09,395 INFO L93 Difference]: Finished difference Result 3217 states and 11977 transitions. [2021-06-05 03:39:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:09,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:09,401 INFO L225 Difference]: With dead ends: 3217 [2021-06-05 03:39:09,401 INFO L226 Difference]: Without dead ends: 3006 [2021-06-05 03:39:09,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-06-05 03:39:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1495. [2021-06-05 03:39:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 3.9772423025435075) internal successors, (5942), 1494 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5942 transitions. [2021-06-05 03:39:09,442 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5942 transitions. Word has length 25 [2021-06-05 03:39:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:09,442 INFO L482 AbstractCegarLoop]: Abstraction has 1495 states and 5942 transitions. [2021-06-05 03:39:09,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5942 transitions. [2021-06-05 03:39:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:09,444 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:09,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:09,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 03:39:09,445 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:09,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:09,445 INFO L82 PathProgramCache]: Analyzing trace with hash 983488155, now seen corresponding path program 101 times [2021-06-05 03:39:09,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:09,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596085783] [2021-06-05 03:39:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:09,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:09,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596085783] [2021-06-05 03:39:09,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596085783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:09,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:09,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:09,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273565529] [2021-06-05 03:39:09,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:09,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:09,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:09,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:09,539 INFO L87 Difference]: Start difference. First operand 1495 states and 5942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:09,610 INFO L93 Difference]: Finished difference Result 3219 states and 11998 transitions. [2021-06-05 03:39:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:09,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:09,616 INFO L225 Difference]: With dead ends: 3219 [2021-06-05 03:39:09,616 INFO L226 Difference]: Without dead ends: 3032 [2021-06-05 03:39:09,616 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-06-05 03:39:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1523. [2021-06-05 03:39:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 3.961892247043364) internal successors, (6030), 1522 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6030 transitions. [2021-06-05 03:39:09,660 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6030 transitions. Word has length 25 [2021-06-05 03:39:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:09,660 INFO L482 AbstractCegarLoop]: Abstraction has 1523 states and 6030 transitions. [2021-06-05 03:39:09,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6030 transitions. [2021-06-05 03:39:09,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:09,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:09,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:09,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 03:39:09,663 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:09,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:09,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2064550781, now seen corresponding path program 102 times [2021-06-05 03:39:09,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:09,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240589520] [2021-06-05 03:39:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:09,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:09,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240589520] [2021-06-05 03:39:09,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240589520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:09,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:09,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:09,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889662102] [2021-06-05 03:39:09,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:09,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:09,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:09,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:09,760 INFO L87 Difference]: Start difference. First operand 1523 states and 6030 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:09,836 INFO L93 Difference]: Finished difference Result 3215 states and 11958 transitions. [2021-06-05 03:39:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:09,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:09,844 INFO L225 Difference]: With dead ends: 3215 [2021-06-05 03:39:09,844 INFO L226 Difference]: Without dead ends: 2990 [2021-06-05 03:39:09,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-06-05 03:39:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1481. [2021-06-05 03:39:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.985135135135135) internal successors, (5898), 1480 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5898 transitions. [2021-06-05 03:39:09,902 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5898 transitions. Word has length 25 [2021-06-05 03:39:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:09,902 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5898 transitions. [2021-06-05 03:39:09,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5898 transitions. [2021-06-05 03:39:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:09,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:09,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:09,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 03:39:09,905 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1125368515, now seen corresponding path program 103 times [2021-06-05 03:39:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:09,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539478428] [2021-06-05 03:39:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:09,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:09,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539478428] [2021-06-05 03:39:09,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539478428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:09,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:09,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:09,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009500898] [2021-06-05 03:39:09,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:09,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:10,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:10,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:10,000 INFO L87 Difference]: Start difference. First operand 1481 states and 5898 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:10,075 INFO L93 Difference]: Finished difference Result 3346 states and 12460 transitions. [2021-06-05 03:39:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:10,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:10,083 INFO L225 Difference]: With dead ends: 3346 [2021-06-05 03:39:10,083 INFO L226 Difference]: Without dead ends: 3157 [2021-06-05 03:39:10,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-06-05 03:39:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 1550. [2021-06-05 03:39:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.9664299548095547) internal successors, (6144), 1549 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6144 transitions. [2021-06-05 03:39:10,144 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6144 transitions. Word has length 25 [2021-06-05 03:39:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:10,144 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 6144 transitions. [2021-06-05 03:39:10,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6144 transitions. [2021-06-05 03:39:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:10,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:10,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:10,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 03:39:10,147 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:10,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1126261787, now seen corresponding path program 104 times [2021-06-05 03:39:10,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:10,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544290174] [2021-06-05 03:39:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:10,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:10,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544290174] [2021-06-05 03:39:10,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544290174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:10,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:10,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:10,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517737773] [2021-06-05 03:39:10,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:10,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:10,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:10,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:10,244 INFO L87 Difference]: Start difference. First operand 1550 states and 6144 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:10,327 INFO L93 Difference]: Finished difference Result 3344 states and 12425 transitions. [2021-06-05 03:39:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:10,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:10,335 INFO L225 Difference]: With dead ends: 3344 [2021-06-05 03:39:10,336 INFO L226 Difference]: Without dead ends: 3127 [2021-06-05 03:39:10,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-06-05 03:39:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 1520. [2021-06-05 03:39:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.9736668861092825) internal successors, (6036), 1519 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6036 transitions. [2021-06-05 03:39:10,394 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6036 transitions. Word has length 25 [2021-06-05 03:39:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:10,394 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 6036 transitions. [2021-06-05 03:39:10,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6036 transitions. [2021-06-05 03:39:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:10,397 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:10,397 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:10,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 03:39:10,397 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash -699628227, now seen corresponding path program 105 times [2021-06-05 03:39:10,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:10,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652258919] [2021-06-05 03:39:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:10,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:10,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652258919] [2021-06-05 03:39:10,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652258919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:10,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:10,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:10,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143915745] [2021-06-05 03:39:10,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:10,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:10,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:10,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:10,495 INFO L87 Difference]: Start difference. First operand 1520 states and 6036 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:10,585 INFO L93 Difference]: Finished difference Result 3414 states and 12679 transitions. [2021-06-05 03:39:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:10,592 INFO L225 Difference]: With dead ends: 3414 [2021-06-05 03:39:10,592 INFO L226 Difference]: Without dead ends: 3225 [2021-06-05 03:39:10,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2021-06-05 03:39:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 1583. [2021-06-05 03:39:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.946270543615676) internal successors, (6243), 1582 states have internal predecessors, (6243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6243 transitions. [2021-06-05 03:39:10,636 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6243 transitions. Word has length 25 [2021-06-05 03:39:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:10,636 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6243 transitions. [2021-06-05 03:39:10,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6243 transitions. [2021-06-05 03:39:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:10,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:10,638 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:10,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 03:39:10,638 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:10,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1255416515, now seen corresponding path program 106 times [2021-06-05 03:39:10,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:10,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504047895] [2021-06-05 03:39:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:10,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:10,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504047895] [2021-06-05 03:39:10,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504047895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:10,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:10,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:10,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6898317] [2021-06-05 03:39:10,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:10,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:10,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:10,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:10,732 INFO L87 Difference]: Start difference. First operand 1583 states and 6243 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:10,787 INFO L93 Difference]: Finished difference Result 3447 states and 12762 transitions. [2021-06-05 03:39:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:10,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:10,793 INFO L225 Difference]: With dead ends: 3447 [2021-06-05 03:39:10,793 INFO L226 Difference]: Without dead ends: 3162 [2021-06-05 03:39:10,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-06-05 03:39:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1520. [2021-06-05 03:39:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.953258722843976) internal successors, (6005), 1519 states have internal predecessors, (6005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6005 transitions. [2021-06-05 03:39:10,837 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6005 transitions. Word has length 25 [2021-06-05 03:39:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:10,837 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 6005 transitions. [2021-06-05 03:39:10,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6005 transitions. [2021-06-05 03:39:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:10,839 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:10,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:10,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 03:39:10,839 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:10,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:10,839 INFO L82 PathProgramCache]: Analyzing trace with hash 282719387, now seen corresponding path program 107 times [2021-06-05 03:39:10,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:10,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098229451] [2021-06-05 03:39:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:10,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:10,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098229451] [2021-06-05 03:39:10,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098229451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:10,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:10,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:10,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107401665] [2021-06-05 03:39:10,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:10,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:10,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:10,933 INFO L87 Difference]: Start difference. First operand 1520 states and 6005 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:10,996 INFO L93 Difference]: Finished difference Result 3393 states and 12587 transitions. [2021-06-05 03:39:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:11,002 INFO L225 Difference]: With dead ends: 3393 [2021-06-05 03:39:11,002 INFO L226 Difference]: Without dead ends: 3206 [2021-06-05 03:39:11,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-06-05 03:39:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1566. [2021-06-05 03:39:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 3.9373801916932907) internal successors, (6162), 1565 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 6162 transitions. [2021-06-05 03:39:11,046 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 6162 transitions. Word has length 25 [2021-06-05 03:39:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:11,046 INFO L482 AbstractCegarLoop]: Abstraction has 1566 states and 6162 transitions. [2021-06-05 03:39:11,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 6162 transitions. [2021-06-05 03:39:11,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:11,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:11,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:11,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 03:39:11,048 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2074670211, now seen corresponding path program 108 times [2021-06-05 03:39:11,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:11,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511036127] [2021-06-05 03:39:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:11,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:11,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511036127] [2021-06-05 03:39:11,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511036127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:11,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:11,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:11,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666452440] [2021-06-05 03:39:11,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:11,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:11,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:11,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:11,132 INFO L87 Difference]: Start difference. First operand 1566 states and 6162 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:11,202 INFO L93 Difference]: Finished difference Result 3428 states and 12676 transitions. [2021-06-05 03:39:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:11,208 INFO L225 Difference]: With dead ends: 3428 [2021-06-05 03:39:11,209 INFO L226 Difference]: Without dead ends: 3121 [2021-06-05 03:39:11,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-06-05 03:39:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1481. [2021-06-05 03:39:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.972297297297297) internal successors, (5879), 1480 states have internal predecessors, (5879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5879 transitions. [2021-06-05 03:39:11,250 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5879 transitions. Word has length 25 [2021-06-05 03:39:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:11,250 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5879 transitions. [2021-06-05 03:39:11,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5879 transitions. [2021-06-05 03:39:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:11,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:11,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:11,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 03:39:11,252 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:11,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1982116581, now seen corresponding path program 109 times [2021-06-05 03:39:11,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:11,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347418131] [2021-06-05 03:39:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:11,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:11,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347418131] [2021-06-05 03:39:11,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347418131] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:11,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:11,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:11,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945518144] [2021-06-05 03:39:11,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:11,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:11,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:11,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:11,355 INFO L87 Difference]: Start difference. First operand 1481 states and 5879 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:11,421 INFO L93 Difference]: Finished difference Result 3323 states and 12372 transitions. [2021-06-05 03:39:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:11,428 INFO L225 Difference]: With dead ends: 3323 [2021-06-05 03:39:11,428 INFO L226 Difference]: Without dead ends: 3134 [2021-06-05 03:39:11,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-06-05 03:39:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1539. [2021-06-05 03:39:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 3.963589076723017) internal successors, (6096), 1538 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 6096 transitions. [2021-06-05 03:39:11,471 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 6096 transitions. Word has length 25 [2021-06-05 03:39:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:11,472 INFO L482 AbstractCegarLoop]: Abstraction has 1539 states and 6096 transitions. [2021-06-05 03:39:11,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 6096 transitions. [2021-06-05 03:39:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:11,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:11,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:11,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 03:39:11,474 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:11,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:11,474 INFO L82 PathProgramCache]: Analyzing trace with hash -789650149, now seen corresponding path program 110 times [2021-06-05 03:39:11,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:11,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84619662] [2021-06-05 03:39:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:11,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:11,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84619662] [2021-06-05 03:39:11,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84619662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:11,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:11,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:11,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503835990] [2021-06-05 03:39:11,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:11,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:11,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:11,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:11,564 INFO L87 Difference]: Start difference. First operand 1539 states and 6096 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:11,632 INFO L93 Difference]: Finished difference Result 3317 states and 12327 transitions. [2021-06-05 03:39:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:11,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:11,639 INFO L225 Difference]: With dead ends: 3317 [2021-06-05 03:39:11,639 INFO L226 Difference]: Without dead ends: 3106 [2021-06-05 03:39:11,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2021-06-05 03:39:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1511. [2021-06-05 03:39:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9695364238410598) internal successors, (5994), 1510 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5994 transitions. [2021-06-05 03:39:11,680 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5994 transitions. Word has length 25 [2021-06-05 03:39:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:11,680 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5994 transitions. [2021-06-05 03:39:11,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5994 transitions. [2021-06-05 03:39:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:11,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:11,682 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:11,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 03:39:11,683 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1002269693, now seen corresponding path program 111 times [2021-06-05 03:39:11,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:11,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812339753] [2021-06-05 03:39:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:11,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:11,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812339753] [2021-06-05 03:39:11,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812339753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:11,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:11,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32223125] [2021-06-05 03:39:11,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:11,772 INFO L87 Difference]: Start difference. First operand 1511 states and 5994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:11,850 INFO L93 Difference]: Finished difference Result 3397 states and 12611 transitions. [2021-06-05 03:39:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:11,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:11,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:11,857 INFO L225 Difference]: With dead ends: 3397 [2021-06-05 03:39:11,857 INFO L226 Difference]: Without dead ends: 3208 [2021-06-05 03:39:11,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-06-05 03:39:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1574. [2021-06-05 03:39:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 3.9421487603305785) internal successors, (6201), 1573 states have internal predecessors, (6201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 6201 transitions. [2021-06-05 03:39:11,902 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 6201 transitions. Word has length 25 [2021-06-05 03:39:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:11,903 INFO L482 AbstractCegarLoop]: Abstraction has 1574 states and 6201 transitions. [2021-06-05 03:39:11,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 6201 transitions. [2021-06-05 03:39:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:11,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:11,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:11,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 03:39:11,905 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:11,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1016489243, now seen corresponding path program 112 times [2021-06-05 03:39:11,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:11,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320126642] [2021-06-05 03:39:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:11,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:11,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320126642] [2021-06-05 03:39:11,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320126642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:11,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:11,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:11,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046054944] [2021-06-05 03:39:11,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:11,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:11,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:11,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:11,998 INFO L87 Difference]: Start difference. First operand 1574 states and 6201 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:12,059 INFO L93 Difference]: Finished difference Result 3430 states and 12694 transitions. [2021-06-05 03:39:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:12,066 INFO L225 Difference]: With dead ends: 3430 [2021-06-05 03:39:12,066 INFO L226 Difference]: Without dead ends: 3145 [2021-06-05 03:39:12,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2021-06-05 03:39:12,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1511. [2021-06-05 03:39:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9496688741721853) internal successors, (5964), 1510 states have internal predecessors, (5964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5964 transitions. [2021-06-05 03:39:12,108 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5964 transitions. Word has length 25 [2021-06-05 03:39:12,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:12,108 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5964 transitions. [2021-06-05 03:39:12,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5964 transitions. [2021-06-05 03:39:12,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:12,110 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:12,111 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:12,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 03:39:12,111 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:12,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:12,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1968717083, now seen corresponding path program 113 times [2021-06-05 03:39:12,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:12,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820658745] [2021-06-05 03:39:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:12,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:12,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820658745] [2021-06-05 03:39:12,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820658745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:12,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:12,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:12,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626685685] [2021-06-05 03:39:12,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:12,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:12,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:12,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:12,213 INFO L87 Difference]: Start difference. First operand 1511 states and 5964 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:12,299 INFO L93 Difference]: Finished difference Result 3366 states and 12489 transitions. [2021-06-05 03:39:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:12,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:12,307 INFO L225 Difference]: With dead ends: 3366 [2021-06-05 03:39:12,307 INFO L226 Difference]: Without dead ends: 3183 [2021-06-05 03:39:12,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:12,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2021-06-05 03:39:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1555. [2021-06-05 03:39:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9356499356499355) internal successors, (6116), 1554 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6116 transitions. [2021-06-05 03:39:12,352 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6116 transitions. Word has length 25 [2021-06-05 03:39:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:12,352 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6116 transitions. [2021-06-05 03:39:12,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6116 transitions. [2021-06-05 03:39:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:12,354 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:12,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:12,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 03:39:12,354 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:12,354 INFO L82 PathProgramCache]: Analyzing trace with hash 899198077, now seen corresponding path program 114 times [2021-06-05 03:39:12,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:12,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292271963] [2021-06-05 03:39:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:12,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:12,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292271963] [2021-06-05 03:39:12,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292271963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:12,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:12,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:12,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806081816] [2021-06-05 03:39:12,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:12,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:12,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:12,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:12,448 INFO L87 Difference]: Start difference. First operand 1555 states and 6116 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:12,505 INFO L93 Difference]: Finished difference Result 3405 states and 12592 transitions. [2021-06-05 03:39:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:12,511 INFO L225 Difference]: With dead ends: 3405 [2021-06-05 03:39:12,512 INFO L226 Difference]: Without dead ends: 3109 [2021-06-05 03:39:12,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-06-05 03:39:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1481. [2021-06-05 03:39:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.962162162162162) internal successors, (5864), 1480 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5864 transitions. [2021-06-05 03:39:12,554 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5864 transitions. Word has length 25 [2021-06-05 03:39:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:12,554 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5864 transitions. [2021-06-05 03:39:12,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5864 transitions. [2021-06-05 03:39:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:12,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:12,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:12,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 03:39:12,556 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:12,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1009720071, now seen corresponding path program 115 times [2021-06-05 03:39:12,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:12,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112560947] [2021-06-05 03:39:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:12,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:12,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112560947] [2021-06-05 03:39:12,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112560947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:12,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:12,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:12,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851263019] [2021-06-05 03:39:12,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:12,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:12,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:12,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:12,644 INFO L87 Difference]: Start difference. First operand 1481 states and 5864 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:12,719 INFO L93 Difference]: Finished difference Result 3292 states and 12263 transitions. [2021-06-05 03:39:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:12,725 INFO L225 Difference]: With dead ends: 3292 [2021-06-05 03:39:12,725 INFO L226 Difference]: Without dead ends: 3105 [2021-06-05 03:39:12,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2021-06-05 03:39:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 1531. [2021-06-05 03:39:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.9562091503267975) internal successors, (6053), 1530 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6053 transitions. [2021-06-05 03:39:12,769 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6053 transitions. Word has length 25 [2021-06-05 03:39:12,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:12,769 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 6053 transitions. [2021-06-05 03:39:12,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6053 transitions. [2021-06-05 03:39:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:12,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:12,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:12,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 03:39:12,771 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:12,771 INFO L82 PathProgramCache]: Analyzing trace with hash 71342555, now seen corresponding path program 116 times [2021-06-05 03:39:12,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:12,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17374587] [2021-06-05 03:39:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:12,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:12,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17374587] [2021-06-05 03:39:12,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17374587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:12,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:12,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:12,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198466950] [2021-06-05 03:39:12,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:12,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:12,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:12,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:12,868 INFO L87 Difference]: Start difference. First operand 1531 states and 6053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:12,950 INFO L93 Difference]: Finished difference Result 3288 states and 12223 transitions. [2021-06-05 03:39:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:12,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:12,958 INFO L225 Difference]: With dead ends: 3288 [2021-06-05 03:39:12,958 INFO L226 Difference]: Without dead ends: 3077 [2021-06-05 03:39:12,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-06-05 03:39:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1503. [2021-06-05 03:39:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.9620505992010653) internal successors, (5951), 1502 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5951 transitions. [2021-06-05 03:39:13,005 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5951 transitions. Word has length 25 [2021-06-05 03:39:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:13,005 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5951 transitions. [2021-06-05 03:39:13,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5951 transitions. [2021-06-05 03:39:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:13,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:13,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:13,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 03:39:13,008 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:13,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1974666203, now seen corresponding path program 117 times [2021-06-05 03:39:13,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:13,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812860351] [2021-06-05 03:39:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:13,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:13,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812860351] [2021-06-05 03:39:13,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812860351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:13,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:13,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:13,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261057945] [2021-06-05 03:39:13,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:13,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:13,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:13,091 INFO L87 Difference]: Start difference. First operand 1503 states and 5951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:13,158 INFO L93 Difference]: Finished difference Result 3349 states and 12451 transitions. [2021-06-05 03:39:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:13,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:13,164 INFO L225 Difference]: With dead ends: 3349 [2021-06-05 03:39:13,164 INFO L226 Difference]: Without dead ends: 3162 [2021-06-05 03:39:13,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-06-05 03:39:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1549. [2021-06-05 03:39:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 3.945736434108527) internal successors, (6108), 1548 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 6108 transitions. [2021-06-05 03:39:13,208 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 6108 transitions. Word has length 25 [2021-06-05 03:39:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:13,208 INFO L482 AbstractCegarLoop]: Abstraction has 1549 states and 6108 transitions. [2021-06-05 03:39:13,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 6108 transitions. [2021-06-05 03:39:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:13,211 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:13,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:13,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 03:39:13,211 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:13,211 INFO L82 PathProgramCache]: Analyzing trace with hash 187284443, now seen corresponding path program 118 times [2021-06-05 03:39:13,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:13,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457130476] [2021-06-05 03:39:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:13,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:13,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457130476] [2021-06-05 03:39:13,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457130476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:13,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:13,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:13,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609955546] [2021-06-05 03:39:13,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:13,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:13,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:13,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:13,295 INFO L87 Difference]: Start difference. First operand 1549 states and 6108 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:13,351 INFO L93 Difference]: Finished difference Result 3384 states and 12540 transitions. [2021-06-05 03:39:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:13,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:13,357 INFO L225 Difference]: With dead ends: 3384 [2021-06-05 03:39:13,357 INFO L226 Difference]: Without dead ends: 3116 [2021-06-05 03:39:13,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-06-05 03:39:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 1503. [2021-06-05 03:39:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.947403462050599) internal successors, (5929), 1502 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5929 transitions. [2021-06-05 03:39:13,401 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5929 transitions. Word has length 25 [2021-06-05 03:39:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:13,402 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5929 transitions. [2021-06-05 03:39:13,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5929 transitions. [2021-06-05 03:39:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:13,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:13,404 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:13,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 03:39:13,404 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1932296131, now seen corresponding path program 119 times [2021-06-05 03:39:13,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:13,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439522101] [2021-06-05 03:39:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:13,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:13,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439522101] [2021-06-05 03:39:13,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439522101] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:13,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:13,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:13,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468829400] [2021-06-05 03:39:13,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:13,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:13,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:13,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:13,520 INFO L87 Difference]: Start difference. First operand 1503 states and 5929 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:13,595 INFO L93 Difference]: Finished difference Result 3339 states and 12398 transitions. [2021-06-05 03:39:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:13,601 INFO L225 Difference]: With dead ends: 3339 [2021-06-05 03:39:13,601 INFO L226 Difference]: Without dead ends: 3156 [2021-06-05 03:39:13,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-06-05 03:39:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1547. [2021-06-05 03:39:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.9333764553686934) internal successors, (6081), 1546 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6081 transitions. [2021-06-05 03:39:13,644 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6081 transitions. Word has length 25 [2021-06-05 03:39:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:13,644 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6081 transitions. [2021-06-05 03:39:13,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6081 transitions. [2021-06-05 03:39:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:13,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:13,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:13,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 03:39:13,646 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:13,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:13,647 INFO L82 PathProgramCache]: Analyzing trace with hash -727646949, now seen corresponding path program 120 times [2021-06-05 03:39:13,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:13,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793343041] [2021-06-05 03:39:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:13,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:13,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793343041] [2021-06-05 03:39:13,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793343041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:13,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:13,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:13,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136210704] [2021-06-05 03:39:13,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:13,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:13,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:13,742 INFO L87 Difference]: Start difference. First operand 1547 states and 6081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:13,833 INFO L93 Difference]: Finished difference Result 3378 states and 12501 transitions. [2021-06-05 03:39:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:13,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:13,839 INFO L225 Difference]: With dead ends: 3378 [2021-06-05 03:39:13,839 INFO L226 Difference]: Without dead ends: 3057 [2021-06-05 03:39:13,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-06-05 03:39:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 1448. [2021-06-05 03:39:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9979267449896336) internal successors, (5785), 1447 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5785 transitions. [2021-06-05 03:39:13,880 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5785 transitions. Word has length 25 [2021-06-05 03:39:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:13,880 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5785 transitions. [2021-06-05 03:39:13,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5785 transitions. [2021-06-05 03:39:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:13,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:13,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:13,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 03:39:13,882 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:13,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1096271389, now seen corresponding path program 121 times [2021-06-05 03:39:13,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:13,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861240099] [2021-06-05 03:39:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:14,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:14,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861240099] [2021-06-05 03:39:14,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861240099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:14,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:14,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:14,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790207287] [2021-06-05 03:39:14,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:14,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:14,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:14,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:14,011 INFO L87 Difference]: Start difference. First operand 1448 states and 5785 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:14,067 INFO L93 Difference]: Finished difference Result 3141 states and 11643 transitions. [2021-06-05 03:39:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:14,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:14,073 INFO L225 Difference]: With dead ends: 3141 [2021-06-05 03:39:14,073 INFO L226 Difference]: Without dead ends: 2982 [2021-06-05 03:39:14,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-06-05 03:39:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1504. [2021-06-05 03:39:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9900199600798403) internal successors, (5997), 1503 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5997 transitions. [2021-06-05 03:39:14,116 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5997 transitions. Word has length 25 [2021-06-05 03:39:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:14,116 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5997 transitions. [2021-06-05 03:39:14,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5997 transitions. [2021-06-05 03:39:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:14,118 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:14,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:14,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 03:39:14,118 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:14,118 INFO L82 PathProgramCache]: Analyzing trace with hash 87973405, now seen corresponding path program 122 times [2021-06-05 03:39:14,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:14,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112740037] [2021-06-05 03:39:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:14,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:14,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112740037] [2021-06-05 03:39:14,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112740037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:14,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:14,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:14,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471668684] [2021-06-05 03:39:14,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:14,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:14,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:14,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:14,224 INFO L87 Difference]: Start difference. First operand 1504 states and 5997 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:14,291 INFO L93 Difference]: Finished difference Result 3204 states and 11850 transitions. [2021-06-05 03:39:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:14,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:14,297 INFO L225 Difference]: With dead ends: 3204 [2021-06-05 03:39:14,297 INFO L226 Difference]: Without dead ends: 2950 [2021-06-05 03:39:14,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-06-05 03:39:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1472. [2021-06-05 03:39:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.989802855200544) internal successors, (5869), 1471 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5869 transitions. [2021-06-05 03:39:14,338 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5869 transitions. Word has length 25 [2021-06-05 03:39:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:14,338 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5869 transitions. [2021-06-05 03:39:14,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5869 transitions. [2021-06-05 03:39:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:14,340 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:14,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:14,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 03:39:14,340 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:14,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:14,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1134886073, now seen corresponding path program 123 times [2021-06-05 03:39:14,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:14,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169118960] [2021-06-05 03:39:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:14,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:14,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169118960] [2021-06-05 03:39:14,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169118960] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:14,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:14,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:14,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112313040] [2021-06-05 03:39:14,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:14,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:14,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:14,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:14,455 INFO L87 Difference]: Start difference. First operand 1472 states and 5869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:14,506 INFO L93 Difference]: Finished difference Result 3092 states and 11449 transitions. [2021-06-05 03:39:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:14,512 INFO L225 Difference]: With dead ends: 3092 [2021-06-05 03:39:14,512 INFO L226 Difference]: Without dead ends: 2933 [2021-06-05 03:39:14,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2021-06-05 03:39:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1488. [2021-06-05 03:39:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9791526563550774) internal successors, (5917), 1487 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5917 transitions. [2021-06-05 03:39:14,555 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5917 transitions. Word has length 25 [2021-06-05 03:39:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:14,555 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5917 transitions. [2021-06-05 03:39:14,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5917 transitions. [2021-06-05 03:39:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:14,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:14,557 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:14,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 03:39:14,558 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:14,558 INFO L82 PathProgramCache]: Analyzing trace with hash -455048677, now seen corresponding path program 124 times [2021-06-05 03:39:14,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:14,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613392326] [2021-06-05 03:39:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:14,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:14,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613392326] [2021-06-05 03:39:14,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613392326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:14,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:14,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:14,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943207126] [2021-06-05 03:39:14,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:14,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:14,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:14,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:14,662 INFO L87 Difference]: Start difference. First operand 1488 states and 5917 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:14,728 INFO L93 Difference]: Finished difference Result 3122 states and 11542 transitions. [2021-06-05 03:39:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:14,734 INFO L225 Difference]: With dead ends: 3122 [2021-06-05 03:39:14,734 INFO L226 Difference]: Without dead ends: 2917 [2021-06-05 03:39:14,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-06-05 03:39:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1472. [2021-06-05 03:39:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9843643779741673) internal successors, (5861), 1471 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5861 transitions. [2021-06-05 03:39:14,775 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5861 transitions. Word has length 25 [2021-06-05 03:39:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:14,775 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5861 transitions. [2021-06-05 03:39:14,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5861 transitions. [2021-06-05 03:39:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:14,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:14,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:14,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 03:39:14,777 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:14,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:14,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1093212163, now seen corresponding path program 125 times [2021-06-05 03:39:14,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:14,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290396] [2021-06-05 03:39:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:14,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:14,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290396] [2021-06-05 03:39:14,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:14,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:14,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:14,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381429322] [2021-06-05 03:39:14,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:14,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:14,866 INFO L87 Difference]: Start difference. First operand 1472 states and 5861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:14,929 INFO L93 Difference]: Finished difference Result 3232 states and 11947 transitions. [2021-06-05 03:39:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:14,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:14,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:14,935 INFO L225 Difference]: With dead ends: 3232 [2021-06-05 03:39:14,935 INFO L226 Difference]: Without dead ends: 3043 [2021-06-05 03:39:14,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-06-05 03:39:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1535. [2021-06-05 03:39:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.955671447196871) internal successors, (6068), 1534 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6068 transitions. [2021-06-05 03:39:14,976 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6068 transitions. Word has length 25 [2021-06-05 03:39:14,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:14,976 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6068 transitions. [2021-06-05 03:39:14,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6068 transitions. [2021-06-05 03:39:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:14,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:14,978 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:14,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 03:39:14,979 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:14,979 INFO L82 PathProgramCache]: Analyzing trace with hash -795159205, now seen corresponding path program 126 times [2021-06-05 03:39:14,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:14,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569756482] [2021-06-05 03:39:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:15,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:15,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569756482] [2021-06-05 03:39:15,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569756482] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:15,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:15,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:15,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560336288] [2021-06-05 03:39:15,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:15,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:15,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:15,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:15,070 INFO L87 Difference]: Start difference. First operand 1535 states and 6068 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:15,121 INFO L93 Difference]: Finished difference Result 3265 states and 12030 transitions. [2021-06-05 03:39:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:15,127 INFO L225 Difference]: With dead ends: 3265 [2021-06-05 03:39:15,127 INFO L226 Difference]: Without dead ends: 2956 [2021-06-05 03:39:15,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-06-05 03:39:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1448. [2021-06-05 03:39:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9896337249481686) internal successors, (5773), 1447 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5773 transitions. [2021-06-05 03:39:15,167 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5773 transitions. Word has length 25 [2021-06-05 03:39:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:15,167 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5773 transitions. [2021-06-05 03:39:15,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5773 transitions. [2021-06-05 03:39:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:15,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:15,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:15,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 03:39:15,169 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash 693784637, now seen corresponding path program 127 times [2021-06-05 03:39:15,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:15,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429558653] [2021-06-05 03:39:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:15,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:15,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429558653] [2021-06-05 03:39:15,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429558653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:15,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:15,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:15,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137152320] [2021-06-05 03:39:15,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:15,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:15,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:15,272 INFO L87 Difference]: Start difference. First operand 1448 states and 5773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:15,324 INFO L93 Difference]: Finished difference Result 3114 states and 11547 transitions. [2021-06-05 03:39:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:15,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:15,330 INFO L225 Difference]: With dead ends: 3114 [2021-06-05 03:39:15,330 INFO L226 Difference]: Without dead ends: 2955 [2021-06-05 03:39:15,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-05 03:39:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1496. [2021-06-05 03:39:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.9846153846153847) internal successors, (5957), 1495 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5957 transitions. [2021-06-05 03:39:15,371 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5957 transitions. Word has length 25 [2021-06-05 03:39:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:15,371 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5957 transitions. [2021-06-05 03:39:15,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5957 transitions. [2021-06-05 03:39:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:15,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:15,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:15,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 03:39:15,373 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -314513347, now seen corresponding path program 128 times [2021-06-05 03:39:15,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:15,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918793672] [2021-06-05 03:39:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:15,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:15,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918793672] [2021-06-05 03:39:15,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918793672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:15,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:15,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:15,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29879935] [2021-06-05 03:39:15,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:15,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:15,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:15,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:15,469 INFO L87 Difference]: Start difference. First operand 1496 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:15,519 INFO L93 Difference]: Finished difference Result 3177 states and 11754 transitions. [2021-06-05 03:39:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:15,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:15,525 INFO L225 Difference]: With dead ends: 3177 [2021-06-05 03:39:15,525 INFO L226 Difference]: Without dead ends: 2923 [2021-06-05 03:39:15,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-06-05 03:39:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1464. [2021-06-05 03:39:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9842788790157213) internal successors, (5829), 1463 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5829 transitions. [2021-06-05 03:39:15,565 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5829 transitions. Word has length 25 [2021-06-05 03:39:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:15,566 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5829 transitions. [2021-06-05 03:39:15,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5829 transitions. [2021-06-05 03:39:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:15,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:15,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:15,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 03:39:15,568 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:15,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1682818143, now seen corresponding path program 129 times [2021-06-05 03:39:15,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:15,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546713831] [2021-06-05 03:39:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:15,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:15,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546713831] [2021-06-05 03:39:15,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546713831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:15,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:15,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:15,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000943931] [2021-06-05 03:39:15,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:15,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:15,667 INFO L87 Difference]: Start difference. First operand 1464 states and 5829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:15,720 INFO L93 Difference]: Finished difference Result 3063 states and 11348 transitions. [2021-06-05 03:39:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:15,726 INFO L225 Difference]: With dead ends: 3063 [2021-06-05 03:39:15,726 INFO L226 Difference]: Without dead ends: 2904 [2021-06-05 03:39:15,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2021-06-05 03:39:15,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1480. [2021-06-05 03:39:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.973630831643002) internal successors, (5877), 1479 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5877 transitions. [2021-06-05 03:39:15,766 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5877 transitions. Word has length 25 [2021-06-05 03:39:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:15,767 INFO L482 AbstractCegarLoop]: Abstraction has 1480 states and 5877 transitions. [2021-06-05 03:39:15,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5877 transitions. [2021-06-05 03:39:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:15,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:15,769 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:15,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 03:39:15,769 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:15,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1603851169, now seen corresponding path program 130 times [2021-06-05 03:39:15,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:15,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212229643] [2021-06-05 03:39:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:15,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:15,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212229643] [2021-06-05 03:39:15,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212229643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:15,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:15,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:15,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483489018] [2021-06-05 03:39:15,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:15,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:15,873 INFO L87 Difference]: Start difference. First operand 1480 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:15,952 INFO L93 Difference]: Finished difference Result 3091 states and 11436 transitions. [2021-06-05 03:39:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:15,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:15,958 INFO L225 Difference]: With dead ends: 3091 [2021-06-05 03:39:15,958 INFO L226 Difference]: Without dead ends: 2888 [2021-06-05 03:39:15,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-06-05 03:39:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1464. [2021-06-05 03:39:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9788106630211892) internal successors, (5821), 1463 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5821 transitions. [2021-06-05 03:39:15,999 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5821 transitions. Word has length 25 [2021-06-05 03:39:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:15,999 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5821 transitions. [2021-06-05 03:39:15,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5821 transitions. [2021-06-05 03:39:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:16,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:16,001 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:16,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 03:39:16,001 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:16,001 INFO L82 PathProgramCache]: Analyzing trace with hash 84395103, now seen corresponding path program 131 times [2021-06-05 03:39:16,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:16,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631895118] [2021-06-05 03:39:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:16,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:16,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631895118] [2021-06-05 03:39:16,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631895118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:16,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:16,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:16,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764741620] [2021-06-05 03:39:16,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:16,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:16,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:16,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:16,090 INFO L87 Difference]: Start difference. First operand 1464 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:16,152 INFO L93 Difference]: Finished difference Result 3184 states and 11790 transitions. [2021-06-05 03:39:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:16,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:16,158 INFO L225 Difference]: With dead ends: 3184 [2021-06-05 03:39:16,158 INFO L226 Difference]: Without dead ends: 2997 [2021-06-05 03:39:16,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2021-06-05 03:39:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1510. [2021-06-05 03:39:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.9615639496355204) internal successors, (5978), 1509 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5978 transitions. [2021-06-05 03:39:16,199 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5978 transitions. Word has length 25 [2021-06-05 03:39:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:16,199 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 5978 transitions. [2021-06-05 03:39:16,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5978 transitions. [2021-06-05 03:39:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:16,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:16,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:16,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 03:39:16,201 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash -268744387, now seen corresponding path program 132 times [2021-06-05 03:39:16,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:16,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951912658] [2021-06-05 03:39:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:16,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:16,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951912658] [2021-06-05 03:39:16,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951912658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:16,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:16,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:16,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249894211] [2021-06-05 03:39:16,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:16,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:16,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:16,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:16,329 INFO L87 Difference]: Start difference. First operand 1510 states and 5978 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:16,383 INFO L93 Difference]: Finished difference Result 3219 states and 11879 transitions. [2021-06-05 03:39:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:16,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:16,388 INFO L225 Difference]: With dead ends: 3219 [2021-06-05 03:39:16,388 INFO L226 Difference]: Without dead ends: 2935 [2021-06-05 03:39:16,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-06-05 03:39:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1448. [2021-06-05 03:39:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.984105044920525) internal successors, (5765), 1447 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5765 transitions. [2021-06-05 03:39:16,429 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5765 transitions. Word has length 25 [2021-06-05 03:39:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:16,429 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5765 transitions. [2021-06-05 03:39:16,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5765 transitions. [2021-06-05 03:39:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:16,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:16,431 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:16,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 03:39:16,431 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash -944238823, now seen corresponding path program 133 times [2021-06-05 03:39:16,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:16,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211315766] [2021-06-05 03:39:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:16,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:16,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211315766] [2021-06-05 03:39:16,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211315766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:16,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:16,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:16,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370199500] [2021-06-05 03:39:16,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:16,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:16,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:16,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:16,547 INFO L87 Difference]: Start difference. First operand 1448 states and 5765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:16,613 INFO L93 Difference]: Finished difference Result 2992 states and 11083 transitions. [2021-06-05 03:39:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:16,620 INFO L225 Difference]: With dead ends: 2992 [2021-06-05 03:39:16,620 INFO L226 Difference]: Without dead ends: 2833 [2021-06-05 03:39:16,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2021-06-05 03:39:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 1472. [2021-06-05 03:39:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.976206662134602) internal successors, (5849), 1471 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2021-06-05 03:39:16,660 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2021-06-05 03:39:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:16,660 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2021-06-05 03:39:16,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2021-06-05 03:39:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:16,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:16,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:16,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 03:39:16,662 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:16,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:16,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1760793723, now seen corresponding path program 134 times [2021-06-05 03:39:16,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:16,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517051766] [2021-06-05 03:39:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:16,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:16,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517051766] [2021-06-05 03:39:16,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517051766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:16,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:16,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:16,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146731776] [2021-06-05 03:39:16,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:16,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:16,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:16,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:16,763 INFO L87 Difference]: Start difference. First operand 1472 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:16,839 INFO L93 Difference]: Finished difference Result 3022 states and 11176 transitions. [2021-06-05 03:39:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:16,845 INFO L225 Difference]: With dead ends: 3022 [2021-06-05 03:39:16,845 INFO L226 Difference]: Without dead ends: 2817 [2021-06-05 03:39:16,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-06-05 03:39:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1456. [2021-06-05 03:39:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9814432989690722) internal successors, (5793), 1455 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5793 transitions. [2021-06-05 03:39:16,885 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5793 transitions. Word has length 25 [2021-06-05 03:39:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:16,886 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5793 transitions. [2021-06-05 03:39:16,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5793 transitions. [2021-06-05 03:39:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:16,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:16,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:16,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 03:39:16,888 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:16,888 INFO L82 PathProgramCache]: Analyzing trace with hash 136823803, now seen corresponding path program 135 times [2021-06-05 03:39:16,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:16,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291771064] [2021-06-05 03:39:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:16,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:16,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291771064] [2021-06-05 03:39:16,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291771064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:16,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:16,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:16,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317143881] [2021-06-05 03:39:16,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:16,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:16,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:16,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:16,998 INFO L87 Difference]: Start difference. First operand 1456 states and 5793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:17,054 INFO L93 Difference]: Finished difference Result 2990 states and 11070 transitions. [2021-06-05 03:39:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:17,059 INFO L225 Difference]: With dead ends: 2990 [2021-06-05 03:39:17,059 INFO L226 Difference]: Without dead ends: 2831 [2021-06-05 03:39:17,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-06-05 03:39:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1472. [2021-06-05 03:39:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9707681849082257) internal successors, (5841), 1471 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5841 transitions. [2021-06-05 03:39:17,099 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5841 transitions. Word has length 25 [2021-06-05 03:39:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:17,099 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5841 transitions. [2021-06-05 03:39:17,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5841 transitions. [2021-06-05 03:39:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:17,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:17,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:17,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 03:39:17,101 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1145121787, now seen corresponding path program 136 times [2021-06-05 03:39:17,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:17,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387773861] [2021-06-05 03:39:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:17,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:17,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387773861] [2021-06-05 03:39:17,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387773861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:17,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:17,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:17,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082156474] [2021-06-05 03:39:17,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:17,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:17,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:17,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:17,220 INFO L87 Difference]: Start difference. First operand 1472 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:17,294 INFO L93 Difference]: Finished difference Result 3018 states and 11158 transitions. [2021-06-05 03:39:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:17,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:17,299 INFO L225 Difference]: With dead ends: 3018 [2021-06-05 03:39:17,299 INFO L226 Difference]: Without dead ends: 2815 [2021-06-05 03:39:17,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-06-05 03:39:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 1456. [2021-06-05 03:39:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9759450171821307) internal successors, (5785), 1455 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5785 transitions. [2021-06-05 03:39:17,339 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5785 transitions. Word has length 25 [2021-06-05 03:39:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:17,339 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5785 transitions. [2021-06-05 03:39:17,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5785 transitions. [2021-06-05 03:39:17,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:17,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:17,341 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:17,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 03:39:17,342 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:17,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1553985757, now seen corresponding path program 137 times [2021-06-05 03:39:17,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:17,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275644404] [2021-06-05 03:39:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:17,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:17,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275644404] [2021-06-05 03:39:17,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275644404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:17,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:17,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:17,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701098900] [2021-06-05 03:39:17,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:17,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:17,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:17,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:17,433 INFO L87 Difference]: Start difference. First operand 1456 states and 5785 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:17,501 INFO L93 Difference]: Finished difference Result 3064 states and 11339 transitions. [2021-06-05 03:39:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:17,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:17,507 INFO L225 Difference]: With dead ends: 3064 [2021-06-05 03:39:17,507 INFO L226 Difference]: Without dead ends: 2875 [2021-06-05 03:39:17,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-06-05 03:39:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1486. [2021-06-05 03:39:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.958249158249158) internal successors, (5878), 1485 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5878 transitions. [2021-06-05 03:39:17,547 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5878 transitions. Word has length 25 [2021-06-05 03:39:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:17,548 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5878 transitions. [2021-06-05 03:39:17,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5878 transitions. [2021-06-05 03:39:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:17,550 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:17,550 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:17,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 03:39:17,550 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:17,550 INFO L82 PathProgramCache]: Analyzing trace with hash -489351237, now seen corresponding path program 138 times [2021-06-05 03:39:17,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:17,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492772994] [2021-06-05 03:39:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:17,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:17,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492772994] [2021-06-05 03:39:17,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492772994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:17,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:17,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:17,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754271085] [2021-06-05 03:39:17,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:17,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:17,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:17,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:17,648 INFO L87 Difference]: Start difference. First operand 1486 states and 5878 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:17,713 INFO L93 Difference]: Finished difference Result 3062 states and 11304 transitions. [2021-06-05 03:39:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:17,718 INFO L225 Difference]: With dead ends: 3062 [2021-06-05 03:39:17,718 INFO L226 Difference]: Without dead ends: 2837 [2021-06-05 03:39:17,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-06-05 03:39:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1448. [2021-06-05 03:39:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9813407049067036) internal successors, (5761), 1447 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5761 transitions. [2021-06-05 03:39:17,758 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5761 transitions. Word has length 25 [2021-06-05 03:39:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:17,758 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5761 transitions. [2021-06-05 03:39:17,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5761 transitions. [2021-06-05 03:39:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:17,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:17,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:17,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 03:39:17,760 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1835768257, now seen corresponding path program 139 times [2021-06-05 03:39:17,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:17,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828658295] [2021-06-05 03:39:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:17,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:17,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828658295] [2021-06-05 03:39:17,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828658295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:17,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:17,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:17,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070024744] [2021-06-05 03:39:17,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:17,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:17,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:17,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:17,845 INFO L87 Difference]: Start difference. First operand 1448 states and 5761 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:17,909 INFO L93 Difference]: Finished difference Result 3235 states and 11988 transitions. [2021-06-05 03:39:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:17,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:17,915 INFO L225 Difference]: With dead ends: 3235 [2021-06-05 03:39:17,915 INFO L226 Difference]: Without dead ends: 3046 [2021-06-05 03:39:17,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-06-05 03:39:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1517. [2021-06-05 03:39:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 3.962401055408971) internal successors, (6007), 1516 states have internal predecessors, (6007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 6007 transitions. [2021-06-05 03:39:17,957 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 6007 transitions. Word has length 25 [2021-06-05 03:39:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:17,958 INFO L482 AbstractCegarLoop]: Abstraction has 1517 states and 6007 transitions. [2021-06-05 03:39:17,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 6007 transitions. [2021-06-05 03:39:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:17,960 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:17,960 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:17,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 03:39:17,960 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:17,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:17,960 INFO L82 PathProgramCache]: Analyzing trace with hash 415862045, now seen corresponding path program 140 times [2021-06-05 03:39:17,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:17,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634119218] [2021-06-05 03:39:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:18,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:18,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634119218] [2021-06-05 03:39:18,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634119218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:18,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:18,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:18,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032299540] [2021-06-05 03:39:18,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:18,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:18,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:18,042 INFO L87 Difference]: Start difference. First operand 1517 states and 6007 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:18,113 INFO L93 Difference]: Finished difference Result 3233 states and 11953 transitions. [2021-06-05 03:39:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:18,120 INFO L225 Difference]: With dead ends: 3233 [2021-06-05 03:39:18,121 INFO L226 Difference]: Without dead ends: 3016 [2021-06-05 03:39:18,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-06-05 03:39:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1487. [2021-06-05 03:39:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.9697173620457606) internal successors, (5899), 1486 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5899 transitions. [2021-06-05 03:39:18,178 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5899 transitions. Word has length 25 [2021-06-05 03:39:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:18,178 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 5899 transitions. [2021-06-05 03:39:18,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5899 transitions. [2021-06-05 03:39:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:18,181 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:18,181 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:18,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 03:39:18,181 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1900401763, now seen corresponding path program 141 times [2021-06-05 03:39:18,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:18,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10583429] [2021-06-05 03:39:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:18,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:18,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10583429] [2021-06-05 03:39:18,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10583429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:18,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:18,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:18,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118596558] [2021-06-05 03:39:18,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:18,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:18,269 INFO L87 Difference]: Start difference. First operand 1487 states and 5899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:18,332 INFO L93 Difference]: Finished difference Result 3303 states and 12207 transitions. [2021-06-05 03:39:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:18,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:18,338 INFO L225 Difference]: With dead ends: 3303 [2021-06-05 03:39:18,338 INFO L226 Difference]: Without dead ends: 3114 [2021-06-05 03:39:18,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:18,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-06-05 03:39:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1550. [2021-06-05 03:39:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.9418979987088445) internal successors, (6106), 1549 states have internal predecessors, (6106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6106 transitions. [2021-06-05 03:39:18,381 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6106 transitions. Word has length 25 [2021-06-05 03:39:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:18,382 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 6106 transitions. [2021-06-05 03:39:18,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6106 transitions. [2021-06-05 03:39:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:18,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:18,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:18,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 03:39:18,384 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1838777245, now seen corresponding path program 142 times [2021-06-05 03:39:18,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:18,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33040262] [2021-06-05 03:39:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:18,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:18,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33040262] [2021-06-05 03:39:18,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33040262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:18,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:18,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:18,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634576590] [2021-06-05 03:39:18,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:18,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:18,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:18,479 INFO L87 Difference]: Start difference. First operand 1550 states and 6106 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:18,544 INFO L93 Difference]: Finished difference Result 3336 states and 12290 transitions. [2021-06-05 03:39:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:18,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:18,550 INFO L225 Difference]: With dead ends: 3336 [2021-06-05 03:39:18,551 INFO L226 Difference]: Without dead ends: 3051 [2021-06-05 03:39:18,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-06-05 03:39:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1487. [2021-06-05 03:39:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.9488559892328396) internal successors, (5868), 1486 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5868 transitions. [2021-06-05 03:39:18,604 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5868 transitions. Word has length 25 [2021-06-05 03:39:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:18,604 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 5868 transitions. [2021-06-05 03:39:18,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5868 transitions. [2021-06-05 03:39:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:18,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:18,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:18,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 03:39:18,607 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash -918054149, now seen corresponding path program 143 times [2021-06-05 03:39:18,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:18,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751792806] [2021-06-05 03:39:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:18,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:18,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751792806] [2021-06-05 03:39:18,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751792806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:18,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:18,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:18,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362039272] [2021-06-05 03:39:18,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:18,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:18,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:18,725 INFO L87 Difference]: Start difference. First operand 1487 states and 5868 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:18,805 INFO L93 Difference]: Finished difference Result 3282 states and 12115 transitions. [2021-06-05 03:39:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:18,813 INFO L225 Difference]: With dead ends: 3282 [2021-06-05 03:39:18,813 INFO L226 Difference]: Without dead ends: 3095 [2021-06-05 03:39:18,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2021-06-05 03:39:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 1533. [2021-06-05 03:39:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 3.9327676240208875) internal successors, (6025), 1532 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 6025 transitions. [2021-06-05 03:39:18,871 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 6025 transitions. Word has length 25 [2021-06-05 03:39:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:18,871 INFO L482 AbstractCegarLoop]: Abstraction has 1533 states and 6025 transitions. [2021-06-05 03:39:18,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 6025 transitions. [2021-06-05 03:39:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:18,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:18,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:18,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 03:39:18,874 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1019523549, now seen corresponding path program 144 times [2021-06-05 03:39:18,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:18,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365042824] [2021-06-05 03:39:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:19,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:19,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365042824] [2021-06-05 03:39:19,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365042824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:19,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:19,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:19,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626385799] [2021-06-05 03:39:19,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:19,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:19,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:19,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:19,013 INFO L87 Difference]: Start difference. First operand 1533 states and 6025 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:19,088 INFO L93 Difference]: Finished difference Result 3317 states and 12204 transitions. [2021-06-05 03:39:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:19,095 INFO L225 Difference]: With dead ends: 3317 [2021-06-05 03:39:19,096 INFO L226 Difference]: Without dead ends: 2994 [2021-06-05 03:39:19,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-06-05 03:39:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1432. [2021-06-05 03:39:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.989517819706499) internal successors, (5709), 1431 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5709 transitions. [2021-06-05 03:39:19,151 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5709 transitions. Word has length 25 [2021-06-05 03:39:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:19,151 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5709 transitions. [2021-06-05 03:39:19,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5709 transitions. [2021-06-05 03:39:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:19,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:19,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:19,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 03:39:19,154 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:19,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1287212865, now seen corresponding path program 145 times [2021-06-05 03:39:19,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:19,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500803124] [2021-06-05 03:39:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:19,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:19,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500803124] [2021-06-05 03:39:19,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500803124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:19,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:19,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:19,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885682515] [2021-06-05 03:39:19,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:19,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:19,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:19,288 INFO L87 Difference]: Start difference. First operand 1432 states and 5709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:19,350 INFO L93 Difference]: Finished difference Result 3078 states and 11404 transitions. [2021-06-05 03:39:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:19,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:19,355 INFO L225 Difference]: With dead ends: 3078 [2021-06-05 03:39:19,356 INFO L226 Difference]: Without dead ends: 2919 [2021-06-05 03:39:19,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-06-05 03:39:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1500. [2021-06-05 03:39:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.9873248832555035) internal successors, (5977), 1499 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5977 transitions. [2021-06-05 03:39:19,396 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5977 transitions. Word has length 25 [2021-06-05 03:39:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:19,397 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5977 transitions. [2021-06-05 03:39:19,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5977 transitions. [2021-06-05 03:39:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:19,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:19,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:19,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 03:39:19,399 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:19,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1999456447, now seen corresponding path program 146 times [2021-06-05 03:39:19,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:19,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805519191] [2021-06-05 03:39:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:19,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:19,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805519191] [2021-06-05 03:39:19,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805519191] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:19,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:19,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:19,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169225707] [2021-06-05 03:39:19,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:19,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:19,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:19,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:19,495 INFO L87 Difference]: Start difference. First operand 1500 states and 5977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:19,552 INFO L93 Difference]: Finished difference Result 3141 states and 11611 transitions. [2021-06-05 03:39:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:19,558 INFO L225 Difference]: With dead ends: 3141 [2021-06-05 03:39:19,558 INFO L226 Difference]: Without dead ends: 2887 [2021-06-05 03:39:19,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2021-06-05 03:39:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1468. [2021-06-05 03:39:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9870483980913427) internal successors, (5849), 1467 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5849 transitions. [2021-06-05 03:39:19,598 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5849 transitions. Word has length 25 [2021-06-05 03:39:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:19,598 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5849 transitions. [2021-06-05 03:39:19,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5849 transitions. [2021-06-05 03:39:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:19,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:19,600 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:19,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 03:39:19,600 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:19,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1248598181, now seen corresponding path program 147 times [2021-06-05 03:39:19,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:19,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403859265] [2021-06-05 03:39:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:19,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:19,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403859265] [2021-06-05 03:39:19,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403859265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:19,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:19,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:19,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371853371] [2021-06-05 03:39:19,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:19,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:19,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:19,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:19,722 INFO L87 Difference]: Start difference. First operand 1468 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:19,773 INFO L93 Difference]: Finished difference Result 3029 states and 11210 transitions. [2021-06-05 03:39:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:19,779 INFO L225 Difference]: With dead ends: 3029 [2021-06-05 03:39:19,779 INFO L226 Difference]: Without dead ends: 2870 [2021-06-05 03:39:19,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-06-05 03:39:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2021-06-05 03:39:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9763991908294) internal successors, (5897), 1483 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5897 transitions. [2021-06-05 03:39:19,819 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5897 transitions. Word has length 25 [2021-06-05 03:39:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:19,819 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5897 transitions. [2021-06-05 03:39:19,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5897 transitions. [2021-06-05 03:39:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:19,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:19,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:19,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 03:39:19,822 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:19,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:19,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1456434365, now seen corresponding path program 148 times [2021-06-05 03:39:19,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:19,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338771753] [2021-06-05 03:39:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:19,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:19,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338771753] [2021-06-05 03:39:19,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338771753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:19,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:19,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:19,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918412235] [2021-06-05 03:39:19,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:19,933 INFO L87 Difference]: Start difference. First operand 1484 states and 5897 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:20,004 INFO L93 Difference]: Finished difference Result 3059 states and 11303 transitions. [2021-06-05 03:39:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:20,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:20,010 INFO L225 Difference]: With dead ends: 3059 [2021-06-05 03:39:20,010 INFO L226 Difference]: Without dead ends: 2854 [2021-06-05 03:39:20,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-06-05 03:39:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1468. [2021-06-05 03:39:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.98159509202454) internal successors, (5841), 1467 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5841 transitions. [2021-06-05 03:39:20,050 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5841 transitions. Word has length 25 [2021-06-05 03:39:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:20,050 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5841 transitions. [2021-06-05 03:39:20,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5841 transitions. [2021-06-05 03:39:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:20,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:20,052 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:20,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 03:39:20,052 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:20,052 INFO L82 PathProgramCache]: Analyzing trace with hash 818270879, now seen corresponding path program 149 times [2021-06-05 03:39:20,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:20,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476868436] [2021-06-05 03:39:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:20,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:20,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476868436] [2021-06-05 03:39:20,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476868436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:20,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:20,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:20,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595261623] [2021-06-05 03:39:20,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:20,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:20,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:20,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:20,162 INFO L87 Difference]: Start difference. First operand 1468 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:20,242 INFO L93 Difference]: Finished difference Result 3169 states and 11708 transitions. [2021-06-05 03:39:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:20,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:20,248 INFO L225 Difference]: With dead ends: 3169 [2021-06-05 03:39:20,249 INFO L226 Difference]: Without dead ends: 2980 [2021-06-05 03:39:20,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2021-06-05 03:39:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1531. [2021-06-05 03:39:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.9529411764705884) internal successors, (6048), 1530 states have internal predecessors, (6048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6048 transitions. [2021-06-05 03:39:20,289 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6048 transitions. Word has length 25 [2021-06-05 03:39:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:20,290 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 6048 transitions. [2021-06-05 03:39:20,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6048 transitions. [2021-06-05 03:39:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:20,292 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:20,292 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:20,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 03:39:20,292 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1116323837, now seen corresponding path program 150 times [2021-06-05 03:39:20,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:20,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081456338] [2021-06-05 03:39:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:20,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:20,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081456338] [2021-06-05 03:39:20,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081456338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:20,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:20,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:20,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394493090] [2021-06-05 03:39:20,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:20,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:20,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:20,382 INFO L87 Difference]: Start difference. First operand 1531 states and 6048 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:20,435 INFO L93 Difference]: Finished difference Result 3202 states and 11791 transitions. [2021-06-05 03:39:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:20,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:20,440 INFO L225 Difference]: With dead ends: 3202 [2021-06-05 03:39:20,441 INFO L226 Difference]: Without dead ends: 2893 [2021-06-05 03:39:20,441 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-06-05 03:39:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1444. [2021-06-05 03:39:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.986832986832987) internal successors, (5753), 1443 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5753 transitions. [2021-06-05 03:39:20,480 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5753 transitions. Word has length 25 [2021-06-05 03:39:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:20,481 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5753 transitions. [2021-06-05 03:39:20,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5753 transitions. [2021-06-05 03:39:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:20,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:20,483 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:20,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 03:39:20,483 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:20,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1279544867, now seen corresponding path program 151 times [2021-06-05 03:39:20,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:20,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469381343] [2021-06-05 03:39:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:20,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:20,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469381343] [2021-06-05 03:39:20,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469381343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:20,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:20,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:20,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639358325] [2021-06-05 03:39:20,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:20,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:20,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:20,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:20,591 INFO L87 Difference]: Start difference. First operand 1444 states and 5753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:20,650 INFO L93 Difference]: Finished difference Result 3001 states and 11117 transitions. [2021-06-05 03:39:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:20,656 INFO L225 Difference]: With dead ends: 3001 [2021-06-05 03:39:20,656 INFO L226 Difference]: Without dead ends: 2842 [2021-06-05 03:39:20,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-06-05 03:39:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1492. [2021-06-05 03:39:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.9818913480885314) internal successors, (5937), 1491 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5937 transitions. [2021-06-05 03:39:20,696 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5937 transitions. Word has length 25 [2021-06-05 03:39:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:20,696 INFO L482 AbstractCegarLoop]: Abstraction has 1492 states and 5937 transitions. [2021-06-05 03:39:20,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5937 transitions. [2021-06-05 03:39:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:20,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:20,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:20,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 03:39:20,698 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2007124445, now seen corresponding path program 152 times [2021-06-05 03:39:20,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:20,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794082312] [2021-06-05 03:39:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:20,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:20,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794082312] [2021-06-05 03:39:20,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794082312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:20,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:20,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:20,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091498683] [2021-06-05 03:39:20,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:20,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:20,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:20,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:20,798 INFO L87 Difference]: Start difference. First operand 1492 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:20,852 INFO L93 Difference]: Finished difference Result 3064 states and 11324 transitions. [2021-06-05 03:39:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:20,857 INFO L225 Difference]: With dead ends: 3064 [2021-06-05 03:39:20,857 INFO L226 Difference]: Without dead ends: 2810 [2021-06-05 03:39:20,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-06-05 03:39:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1460. [2021-06-05 03:39:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9814941740918437) internal successors, (5809), 1459 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5809 transitions. [2021-06-05 03:39:20,897 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5809 transitions. Word has length 25 [2021-06-05 03:39:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:20,897 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5809 transitions. [2021-06-05 03:39:20,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5809 transitions. [2021-06-05 03:39:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:20,899 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:20,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:20,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 03:39:20,899 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:20,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1799001343, now seen corresponding path program 153 times [2021-06-05 03:39:20,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:20,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246999246] [2021-06-05 03:39:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:21,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:21,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246999246] [2021-06-05 03:39:21,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246999246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:21,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:21,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:21,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192146504] [2021-06-05 03:39:21,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:21,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:21,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:21,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:21,004 INFO L87 Difference]: Start difference. First operand 1460 states and 5809 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:21,059 INFO L93 Difference]: Finished difference Result 2906 states and 10766 transitions. [2021-06-05 03:39:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:21,064 INFO L225 Difference]: With dead ends: 2906 [2021-06-05 03:39:21,064 INFO L226 Difference]: Without dead ends: 2747 [2021-06-05 03:39:21,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-06-05 03:39:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1476. [2021-06-05 03:39:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.9708474576271184) internal successors, (5857), 1475 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5857 transitions. [2021-06-05 03:39:21,104 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5857 transitions. Word has length 25 [2021-06-05 03:39:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:21,104 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5857 transitions. [2021-06-05 03:39:21,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5857 transitions. [2021-06-05 03:39:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:21,106 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:21,106 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:21,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 03:39:21,106 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:21,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:21,106 INFO L82 PathProgramCache]: Analyzing trace with hash -143270657, now seen corresponding path program 154 times [2021-06-05 03:39:21,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:21,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742125104] [2021-06-05 03:39:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:21,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:21,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742125104] [2021-06-05 03:39:21,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742125104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:21,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:21,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:21,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836994558] [2021-06-05 03:39:21,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:21,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:21,202 INFO L87 Difference]: Start difference. First operand 1476 states and 5857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:21,269 INFO L93 Difference]: Finished difference Result 2794 states and 10429 transitions. [2021-06-05 03:39:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:21,275 INFO L225 Difference]: With dead ends: 2794 [2021-06-05 03:39:21,275 INFO L226 Difference]: Without dead ends: 2603 [2021-06-05 03:39:21,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-05 03:39:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1460. [2021-06-05 03:39:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.976010966415353) internal successors, (5801), 1459 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5801 transitions. [2021-06-05 03:39:21,314 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5801 transitions. Word has length 25 [2021-06-05 03:39:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:21,314 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5801 transitions. [2021-06-05 03:39:21,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5801 transitions. [2021-06-05 03:39:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:21,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:21,316 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:21,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 03:39:21,316 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1544975615, now seen corresponding path program 155 times [2021-06-05 03:39:21,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:21,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249538942] [2021-06-05 03:39:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:21,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:21,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249538942] [2021-06-05 03:39:21,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249538942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:21,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:21,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:21,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431890335] [2021-06-05 03:39:21,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:21,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:21,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:21,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:21,414 INFO L87 Difference]: Start difference. First operand 1460 states and 5801 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:21,478 INFO L93 Difference]: Finished difference Result 3041 states and 11257 transitions. [2021-06-05 03:39:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:21,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:21,483 INFO L225 Difference]: With dead ends: 3041 [2021-06-05 03:39:21,483 INFO L226 Difference]: Without dead ends: 2866 [2021-06-05 03:39:21,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-06-05 03:39:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1500. [2021-06-05 03:39:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.963308872581721) internal successors, (5941), 1499 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5941 transitions. [2021-06-05 03:39:21,523 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5941 transitions. Word has length 25 [2021-06-05 03:39:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:21,523 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5941 transitions. [2021-06-05 03:39:21,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5941 transitions. [2021-06-05 03:39:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:21,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:21,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:21,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 03:39:21,525 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash -110548771, now seen corresponding path program 156 times [2021-06-05 03:39:21,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:21,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843384541] [2021-06-05 03:39:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:21,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:21,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843384541] [2021-06-05 03:39:21,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843384541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:21,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:21,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:21,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052384133] [2021-06-05 03:39:21,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:21,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:21,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:21,638 INFO L87 Difference]: Start difference. First operand 1500 states and 5941 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:21,698 INFO L93 Difference]: Finished difference Result 2993 states and 11057 transitions. [2021-06-05 03:39:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:21,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:21,703 INFO L225 Difference]: With dead ends: 2993 [2021-06-05 03:39:21,704 INFO L226 Difference]: Without dead ends: 2715 [2021-06-05 03:39:21,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-06-05 03:39:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1444. [2021-06-05 03:39:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9812889812889813) internal successors, (5745), 1443 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5745 transitions. [2021-06-05 03:39:21,742 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5745 transitions. Word has length 25 [2021-06-05 03:39:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:21,742 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5745 transitions. [2021-06-05 03:39:21,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5745 transitions. [2021-06-05 03:39:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:21,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:21,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:21,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 03:39:21,745 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1747685561, now seen corresponding path program 157 times [2021-06-05 03:39:21,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:21,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420585763] [2021-06-05 03:39:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:21,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:21,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420585763] [2021-06-05 03:39:21,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420585763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:21,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:21,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:21,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280443906] [2021-06-05 03:39:21,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:21,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:21,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:21,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:21,850 INFO L87 Difference]: Start difference. First operand 1444 states and 5745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:21,911 INFO L93 Difference]: Finished difference Result 2895 states and 10717 transitions. [2021-06-05 03:39:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:21,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:21,916 INFO L225 Difference]: With dead ends: 2895 [2021-06-05 03:39:21,916 INFO L226 Difference]: Without dead ends: 2736 [2021-06-05 03:39:21,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-06-05 03:39:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1468. [2021-06-05 03:39:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9734151329243352) internal successors, (5829), 1467 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5829 transitions. [2021-06-05 03:39:21,956 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5829 transitions. Word has length 25 [2021-06-05 03:39:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:21,956 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5829 transitions. [2021-06-05 03:39:21,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5829 transitions. [2021-06-05 03:39:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:21,958 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:21,958 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:21,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 03:39:21,958 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:21,958 INFO L82 PathProgramCache]: Analyzing trace with hash 157750811, now seen corresponding path program 158 times [2021-06-05 03:39:21,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:21,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044633001] [2021-06-05 03:39:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:22,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:22,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044633001] [2021-06-05 03:39:22,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044633001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:22,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:22,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:22,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792190075] [2021-06-05 03:39:22,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:22,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:22,060 INFO L87 Difference]: Start difference. First operand 1468 states and 5829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:22,133 INFO L93 Difference]: Finished difference Result 2925 states and 10810 transitions. [2021-06-05 03:39:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:22,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:22,138 INFO L225 Difference]: With dead ends: 2925 [2021-06-05 03:39:22,138 INFO L226 Difference]: Without dead ends: 2720 [2021-06-05 03:39:22,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-06-05 03:39:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1452. [2021-06-05 03:39:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.9786354238456236) internal successors, (5773), 1451 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5773 transitions. [2021-06-05 03:39:22,177 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5773 transitions. Word has length 25 [2021-06-05 03:39:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:22,177 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 5773 transitions. [2021-06-05 03:39:22,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5773 transitions. [2021-06-05 03:39:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:22,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:22,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:22,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 03:39:22,179 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 253007003, now seen corresponding path program 159 times [2021-06-05 03:39:22,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:22,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015825786] [2021-06-05 03:39:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:22,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:22,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015825786] [2021-06-05 03:39:22,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015825786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:22,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:22,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:22,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508133716] [2021-06-05 03:39:22,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:22,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:22,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:22,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:22,294 INFO L87 Difference]: Start difference. First operand 1452 states and 5773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:22,355 INFO L93 Difference]: Finished difference Result 2849 states and 10552 transitions. [2021-06-05 03:39:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:22,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:22,361 INFO L225 Difference]: With dead ends: 2849 [2021-06-05 03:39:22,361 INFO L226 Difference]: Without dead ends: 2690 [2021-06-05 03:39:22,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-06-05 03:39:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1468. [2021-06-05 03:39:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9679618268575325) internal successors, (5821), 1467 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5821 transitions. [2021-06-05 03:39:22,406 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5821 transitions. Word has length 25 [2021-06-05 03:39:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:22,406 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5821 transitions. [2021-06-05 03:39:22,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5821 transitions. [2021-06-05 03:39:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:22,408 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:22,408 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:22,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 03:39:22,409 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:22,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1689264997, now seen corresponding path program 160 times [2021-06-05 03:39:22,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:22,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117846022] [2021-06-05 03:39:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:22,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:22,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117846022] [2021-06-05 03:39:22,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117846022] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:22,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:22,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:22,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164324654] [2021-06-05 03:39:22,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:22,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:22,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:22,523 INFO L87 Difference]: Start difference. First operand 1468 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:22,596 INFO L93 Difference]: Finished difference Result 2737 states and 10215 transitions. [2021-06-05 03:39:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:22,601 INFO L225 Difference]: With dead ends: 2737 [2021-06-05 03:39:22,601 INFO L226 Difference]: Without dead ends: 2546 [2021-06-05 03:39:22,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-06-05 03:39:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1452. [2021-06-05 03:39:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.9731219848380426) internal successors, (5765), 1451 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5765 transitions. [2021-06-05 03:39:22,639 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5765 transitions. Word has length 25 [2021-06-05 03:39:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:22,639 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 5765 transitions. [2021-06-05 03:39:22,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5765 transitions. [2021-06-05 03:39:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:22,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:22,641 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:22,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 03:39:22,641 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:22,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1670168957, now seen corresponding path program 161 times [2021-06-05 03:39:22,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:22,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773763903] [2021-06-05 03:39:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:22,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:22,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773763903] [2021-06-05 03:39:22,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773763903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:22,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:22,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:22,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062080406] [2021-06-05 03:39:22,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:22,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:22,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:22,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:22,741 INFO L87 Difference]: Start difference. First operand 1452 states and 5765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:22,814 INFO L93 Difference]: Finished difference Result 2887 states and 10689 transitions. [2021-06-05 03:39:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:22,819 INFO L225 Difference]: With dead ends: 2887 [2021-06-05 03:39:22,819 INFO L226 Difference]: Without dead ends: 2698 [2021-06-05 03:39:22,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-06-05 03:39:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1476. [2021-06-05 03:39:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.96) internal successors, (5841), 1475 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5841 transitions. [2021-06-05 03:39:22,857 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5841 transitions. Word has length 25 [2021-06-05 03:39:22,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:22,858 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5841 transitions. [2021-06-05 03:39:22,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5841 transitions. [2021-06-05 03:39:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:22,860 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:22,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:22,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 03:39:22,860 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:22,860 INFO L82 PathProgramCache]: Analyzing trace with hash 929216859, now seen corresponding path program 162 times [2021-06-05 03:39:22,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:22,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518055462] [2021-06-05 03:39:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:22,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:22,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518055462] [2021-06-05 03:39:22,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518055462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:22,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:22,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:22,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111284265] [2021-06-05 03:39:22,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:22,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:22,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:22,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:22,962 INFO L87 Difference]: Start difference. First operand 1476 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:23,037 INFO L93 Difference]: Finished difference Result 2745 states and 10235 transitions. [2021-06-05 03:39:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:23,042 INFO L225 Difference]: With dead ends: 2745 [2021-06-05 03:39:23,042 INFO L226 Difference]: Without dead ends: 2538 [2021-06-05 03:39:23,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-06-05 03:39:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1444. [2021-06-05 03:39:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9785169785169785) internal successors, (5741), 1443 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5741 transitions. [2021-06-05 03:39:23,080 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5741 transitions. Word has length 25 [2021-06-05 03:39:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:23,080 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5741 transitions. [2021-06-05 03:39:23,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5741 transitions. [2021-06-05 03:39:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:23,082 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:23,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:23,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 03:39:23,082 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1719585057, now seen corresponding path program 163 times [2021-06-05 03:39:23,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:23,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819618831] [2021-06-05 03:39:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:23,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:23,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819618831] [2021-06-05 03:39:23,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819618831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:23,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:23,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:23,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955580101] [2021-06-05 03:39:23,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:23,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:23,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:23,185 INFO L87 Difference]: Start difference. First operand 1444 states and 5741 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:23,248 INFO L93 Difference]: Finished difference Result 3119 states and 11567 transitions. [2021-06-05 03:39:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:23,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:23,254 INFO L225 Difference]: With dead ends: 3119 [2021-06-05 03:39:23,254 INFO L226 Difference]: Without dead ends: 2930 [2021-06-05 03:39:23,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-06-05 03:39:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1496. [2021-06-05 03:39:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.97123745819398) internal successors, (5937), 1495 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5937 transitions. [2021-06-05 03:39:23,294 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5937 transitions. Word has length 25 [2021-06-05 03:39:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:23,294 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5937 transitions. [2021-06-05 03:39:23,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5937 transitions. [2021-06-05 03:39:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:23,296 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:23,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:23,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 03:39:23,297 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1834430141, now seen corresponding path program 164 times [2021-06-05 03:39:23,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:23,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519793460] [2021-06-05 03:39:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:23,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:23,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519793460] [2021-06-05 03:39:23,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519793460] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:23,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:23,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:23,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142328563] [2021-06-05 03:39:23,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:23,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:23,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:23,398 INFO L87 Difference]: Start difference. First operand 1496 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:23,469 INFO L93 Difference]: Finished difference Result 3105 states and 11498 transitions. [2021-06-05 03:39:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:23,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:23,475 INFO L225 Difference]: With dead ends: 3105 [2021-06-05 03:39:23,475 INFO L226 Difference]: Without dead ends: 2906 [2021-06-05 03:39:23,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-06-05 03:39:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1472. [2021-06-05 03:39:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.976206662134602) internal successors, (5849), 1471 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2021-06-05 03:39:23,515 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2021-06-05 03:39:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:23,515 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2021-06-05 03:39:23,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2021-06-05 03:39:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:23,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:23,517 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:23,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 03:39:23,517 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash 754346813, now seen corresponding path program 165 times [2021-06-05 03:39:23,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:23,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699731935] [2021-06-05 03:39:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:23,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:23,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699731935] [2021-06-05 03:39:23,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699731935] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:23,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:23,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:23,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756383220] [2021-06-05 03:39:23,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:23,618 INFO L87 Difference]: Start difference. First operand 1472 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:23,691 INFO L93 Difference]: Finished difference Result 3142 states and 11614 transitions. [2021-06-05 03:39:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:23,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:23,697 INFO L225 Difference]: With dead ends: 3142 [2021-06-05 03:39:23,697 INFO L226 Difference]: Without dead ends: 2953 [2021-06-05 03:39:23,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-06-05 03:39:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1535. [2021-06-05 03:39:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.9478487614080833) internal successors, (6056), 1534 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6056 transitions. [2021-06-05 03:39:23,739 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6056 transitions. Word has length 25 [2021-06-05 03:39:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:23,739 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6056 transitions. [2021-06-05 03:39:23,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6056 transitions. [2021-06-05 03:39:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:23,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:23,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:23,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 03:39:23,741 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1520667587, now seen corresponding path program 166 times [2021-06-05 03:39:23,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:23,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649808180] [2021-06-05 03:39:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:23,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:23,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649808180] [2021-06-05 03:39:23,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649808180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:23,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:23,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:23,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950191897] [2021-06-05 03:39:23,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:23,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:23,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:23,847 INFO L87 Difference]: Start difference. First operand 1535 states and 6056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:23,913 INFO L93 Difference]: Finished difference Result 3175 states and 11697 transitions. [2021-06-05 03:39:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:23,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:23,919 INFO L225 Difference]: With dead ends: 3175 [2021-06-05 03:39:23,919 INFO L226 Difference]: Without dead ends: 2890 [2021-06-05 03:39:23,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2021-06-05 03:39:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1472. [2021-06-05 03:39:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.957171991842284) internal successors, (5821), 1471 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5821 transitions. [2021-06-05 03:39:23,960 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5821 transitions. Word has length 25 [2021-06-05 03:39:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:23,960 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5821 transitions. [2021-06-05 03:39:23,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5821 transitions. [2021-06-05 03:39:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:23,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:23,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:23,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 03:39:23,962 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash 500513947, now seen corresponding path program 167 times [2021-06-05 03:39:23,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:23,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188887906] [2021-06-05 03:39:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:24,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:24,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188887906] [2021-06-05 03:39:24,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188887906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:24,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:24,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:24,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179737871] [2021-06-05 03:39:24,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:24,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:24,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:24,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:24,084 INFO L87 Difference]: Start difference. First operand 1472 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:24,158 INFO L93 Difference]: Finished difference Result 3091 states and 11422 transitions. [2021-06-05 03:39:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:24,165 INFO L225 Difference]: With dead ends: 3091 [2021-06-05 03:39:24,165 INFO L226 Difference]: Without dead ends: 2916 [2021-06-05 03:39:24,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-06-05 03:39:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1512. [2021-06-05 03:39:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.9450694904037062) internal successors, (5961), 1511 states have internal predecessors, (5961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5961 transitions. [2021-06-05 03:39:24,230 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5961 transitions. Word has length 25 [2021-06-05 03:39:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:24,230 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5961 transitions. [2021-06-05 03:39:24,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5961 transitions. [2021-06-05 03:39:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:24,232 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:24,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:24,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 03:39:24,232 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash 718865533, now seen corresponding path program 168 times [2021-06-05 03:39:24,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:24,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635353419] [2021-06-05 03:39:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:24,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:24,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635353419] [2021-06-05 03:39:24,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635353419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:24,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:24,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:24,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356342043] [2021-06-05 03:39:24,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:24,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:24,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:24,348 INFO L87 Difference]: Start difference. First operand 1512 states and 5961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:24,400 INFO L93 Difference]: Finished difference Result 3043 states and 11222 transitions. [2021-06-05 03:39:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:24,405 INFO L225 Difference]: With dead ends: 3043 [2021-06-05 03:39:24,406 INFO L226 Difference]: Without dead ends: 2741 [2021-06-05 03:39:24,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-06-05 03:39:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1432. [2021-06-05 03:39:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9853249475890986) internal successors, (5703), 1431 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5703 transitions. [2021-06-05 03:39:24,456 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5703 transitions. Word has length 25 [2021-06-05 03:39:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:24,456 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5703 transitions. [2021-06-05 03:39:24,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5703 transitions. [2021-06-05 03:39:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:24,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:24,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:24,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 03:39:24,458 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash -885386243, now seen corresponding path program 169 times [2021-06-05 03:39:24,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:24,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534637312] [2021-06-05 03:39:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:24,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:24,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534637312] [2021-06-05 03:39:24,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534637312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:24,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:24,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:24,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850605847] [2021-06-05 03:39:24,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:24,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:24,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:24,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:24,550 INFO L87 Difference]: Start difference. First operand 1432 states and 5703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:24,601 INFO L93 Difference]: Finished difference Result 3020 states and 11214 transitions. [2021-06-05 03:39:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:24,607 INFO L225 Difference]: With dead ends: 3020 [2021-06-05 03:39:24,607 INFO L226 Difference]: Without dead ends: 2861 [2021-06-05 03:39:24,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-06-05 03:39:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1488. [2021-06-05 03:39:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9858776059179557) internal successors, (5927), 1487 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5927 transitions. [2021-06-05 03:39:24,649 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5927 transitions. Word has length 25 [2021-06-05 03:39:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:24,649 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5927 transitions. [2021-06-05 03:39:24,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5927 transitions. [2021-06-05 03:39:24,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:24,651 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:24,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:24,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 03:39:24,651 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:24,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1893684227, now seen corresponding path program 170 times [2021-06-05 03:39:24,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:24,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929145428] [2021-06-05 03:39:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:24,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:24,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929145428] [2021-06-05 03:39:24,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929145428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:24,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:24,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:24,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30396710] [2021-06-05 03:39:24,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:24,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:24,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:24,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:24,762 INFO L87 Difference]: Start difference. First operand 1488 states and 5927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:24,813 INFO L93 Difference]: Finished difference Result 3083 states and 11421 transitions. [2021-06-05 03:39:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:24,819 INFO L225 Difference]: With dead ends: 3083 [2021-06-05 03:39:24,819 INFO L226 Difference]: Without dead ends: 2829 [2021-06-05 03:39:24,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2021-06-05 03:39:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2021-06-05 03:39:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9855670103092784) internal successors, (5799), 1455 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5799 transitions. [2021-06-05 03:39:24,868 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5799 transitions. Word has length 25 [2021-06-05 03:39:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:24,868 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5799 transitions. [2021-06-05 03:39:24,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5799 transitions. [2021-06-05 03:39:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:24,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:24,871 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:24,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 03:39:24,871 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash 103647263, now seen corresponding path program 171 times [2021-06-05 03:39:24,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:24,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849582201] [2021-06-05 03:39:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:24,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:24,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849582201] [2021-06-05 03:39:24,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849582201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:24,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:24,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128049694] [2021-06-05 03:39:24,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:24,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:24,966 INFO L87 Difference]: Start difference. First operand 1456 states and 5799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:25,037 INFO L93 Difference]: Finished difference Result 2969 states and 11015 transitions. [2021-06-05 03:39:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:25,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:25,044 INFO L225 Difference]: With dead ends: 2969 [2021-06-05 03:39:25,045 INFO L226 Difference]: Without dead ends: 2810 [2021-06-05 03:39:25,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-06-05 03:39:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1472. [2021-06-05 03:39:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9748470428280083) internal successors, (5847), 1471 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2021-06-05 03:39:25,091 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2021-06-05 03:39:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:25,091 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2021-06-05 03:39:25,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2021-06-05 03:39:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:25,093 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:25,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:25,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 03:39:25,093 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1111945247, now seen corresponding path program 172 times [2021-06-05 03:39:25,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:25,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305539681] [2021-06-05 03:39:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:25,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:25,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305539681] [2021-06-05 03:39:25,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305539681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:25,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:25,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:25,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671424864] [2021-06-05 03:39:25,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:25,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:25,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:25,187 INFO L87 Difference]: Start difference. First operand 1472 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:25,253 INFO L93 Difference]: Finished difference Result 2997 states and 11103 transitions. [2021-06-05 03:39:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:25,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:25,258 INFO L225 Difference]: With dead ends: 2997 [2021-06-05 03:39:25,258 INFO L226 Difference]: Without dead ends: 2794 [2021-06-05 03:39:25,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-06-05 03:39:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1456. [2021-06-05 03:39:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.980068728522337) internal successors, (5791), 1455 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2021-06-05 03:39:25,300 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2021-06-05 03:39:25,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:25,300 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2021-06-05 03:39:25,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2021-06-05 03:39:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:25,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:25,302 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:25,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 03:39:25,302 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:25,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:25,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1494775777, now seen corresponding path program 173 times [2021-06-05 03:39:25,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:25,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967261875] [2021-06-05 03:39:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:25,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:25,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967261875] [2021-06-05 03:39:25,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967261875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:25,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:25,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:25,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143172778] [2021-06-05 03:39:25,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:25,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:25,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:25,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:25,385 INFO L87 Difference]: Start difference. First operand 1456 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:25,449 INFO L93 Difference]: Finished difference Result 3090 states and 11457 transitions. [2021-06-05 03:39:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:25,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:25,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:25,454 INFO L225 Difference]: With dead ends: 3090 [2021-06-05 03:39:25,455 INFO L226 Difference]: Without dead ends: 2903 [2021-06-05 03:39:25,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-06-05 03:39:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1502. [2021-06-05 03:39:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9626915389740174) internal successors, (5948), 1501 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2021-06-05 03:39:25,496 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2021-06-05 03:39:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:25,496 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2021-06-05 03:39:25,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2021-06-05 03:39:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:25,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:25,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:25,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 03:39:25,499 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:25,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1847915267, now seen corresponding path program 174 times [2021-06-05 03:39:25,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:25,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765498379] [2021-06-05 03:39:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:25,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:25,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765498379] [2021-06-05 03:39:25,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765498379] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:25,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:25,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:25,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716091948] [2021-06-05 03:39:25,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:25,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:25,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:25,584 INFO L87 Difference]: Start difference. First operand 1502 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:25,635 INFO L93 Difference]: Finished difference Result 3125 states and 11546 transitions. [2021-06-05 03:39:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:25,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:25,641 INFO L225 Difference]: With dead ends: 3125 [2021-06-05 03:39:25,641 INFO L226 Difference]: Without dead ends: 2841 [2021-06-05 03:39:25,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-06-05 03:39:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1440. [2021-06-05 03:39:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.985406532314107) internal successors, (5735), 1439 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5735 transitions. [2021-06-05 03:39:25,682 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5735 transitions. Word has length 25 [2021-06-05 03:39:25,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:25,682 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5735 transitions. [2021-06-05 03:39:25,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5735 transitions. [2021-06-05 03:39:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:25,684 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:25,684 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:25,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 03:39:25,684 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash 515731295, now seen corresponding path program 175 times [2021-06-05 03:39:25,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:25,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618910260] [2021-06-05 03:39:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:25,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:25,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618910260] [2021-06-05 03:39:25,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618910260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:25,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:25,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:25,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231765028] [2021-06-05 03:39:25,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:25,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:25,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:25,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:25,793 INFO L87 Difference]: Start difference. First operand 1440 states and 5735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:25,844 INFO L93 Difference]: Finished difference Result 2970 states and 11015 transitions. [2021-06-05 03:39:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:25,849 INFO L225 Difference]: With dead ends: 2970 [2021-06-05 03:39:25,850 INFO L226 Difference]: Without dead ends: 2811 [2021-06-05 03:39:25,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-06-05 03:39:25,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1488. [2021-06-05 03:39:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.980497646267653) internal successors, (5919), 1487 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5919 transitions. [2021-06-05 03:39:25,891 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5919 transitions. Word has length 25 [2021-06-05 03:39:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:25,891 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5919 transitions. [2021-06-05 03:39:25,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5919 transitions. [2021-06-05 03:39:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:25,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:25,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:25,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 03:39:25,893 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash -492566689, now seen corresponding path program 176 times [2021-06-05 03:39:25,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:25,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688162725] [2021-06-05 03:39:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:25,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:25,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688162725] [2021-06-05 03:39:25,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688162725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:25,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:25,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:25,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083781524] [2021-06-05 03:39:25,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:25,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:25,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:25,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:25,986 INFO L87 Difference]: Start difference. First operand 1488 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:26,035 INFO L93 Difference]: Finished difference Result 3033 states and 11222 transitions. [2021-06-05 03:39:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:26,041 INFO L225 Difference]: With dead ends: 3033 [2021-06-05 03:39:26,041 INFO L226 Difference]: Without dead ends: 2779 [2021-06-05 03:39:26,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-06-05 03:39:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 1456. [2021-06-05 03:39:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.980068728522337) internal successors, (5791), 1455 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2021-06-05 03:39:26,081 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2021-06-05 03:39:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:26,081 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2021-06-05 03:39:26,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2021-06-05 03:39:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:26,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:26,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:26,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 03:39:26,083 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1556289311, now seen corresponding path program 177 times [2021-06-05 03:39:26,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:26,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960707389] [2021-06-05 03:39:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:26,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:26,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960707389] [2021-06-05 03:39:26,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960707389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:26,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:26,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:26,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931929272] [2021-06-05 03:39:26,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:26,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:26,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:26,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:26,191 INFO L87 Difference]: Start difference. First operand 1456 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:26,265 INFO L93 Difference]: Finished difference Result 2875 states and 10664 transitions. [2021-06-05 03:39:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:26,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:26,270 INFO L225 Difference]: With dead ends: 2875 [2021-06-05 03:39:26,270 INFO L226 Difference]: Without dead ends: 2716 [2021-06-05 03:39:26,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-06-05 03:39:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1472. [2021-06-05 03:39:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9694085656016314) internal successors, (5839), 1471 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5839 transitions. [2021-06-05 03:39:26,309 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5839 transitions. Word has length 25 [2021-06-05 03:39:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:26,310 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5839 transitions. [2021-06-05 03:39:26,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5839 transitions. [2021-06-05 03:39:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:26,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:26,312 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:26,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 03:39:26,312 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -385982689, now seen corresponding path program 178 times [2021-06-05 03:39:26,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:26,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971779644] [2021-06-05 03:39:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:26,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:26,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971779644] [2021-06-05 03:39:26,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971779644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:26,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:26,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:26,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907226039] [2021-06-05 03:39:26,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:26,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:26,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:26,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:26,399 INFO L87 Difference]: Start difference. First operand 1472 states and 5839 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:26,463 INFO L93 Difference]: Finished difference Result 2763 states and 10327 transitions. [2021-06-05 03:39:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:26,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:26,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:26,468 INFO L225 Difference]: With dead ends: 2763 [2021-06-05 03:39:26,468 INFO L226 Difference]: Without dead ends: 2572 [2021-06-05 03:39:26,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-06-05 03:39:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1456. [2021-06-05 03:39:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9745704467353953) internal successors, (5783), 1455 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5783 transitions. [2021-06-05 03:39:26,506 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5783 transitions. Word has length 25 [2021-06-05 03:39:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:26,506 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5783 transitions. [2021-06-05 03:39:26,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5783 transitions. [2021-06-05 03:39:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:26,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:26,508 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:26,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 03:39:26,508 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1302263583, now seen corresponding path program 179 times [2021-06-05 03:39:26,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:26,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576506979] [2021-06-05 03:39:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:26,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:26,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576506979] [2021-06-05 03:39:26,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576506979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:26,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:26,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:26,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713161493] [2021-06-05 03:39:26,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:26,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:26,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:26,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:26,611 INFO L87 Difference]: Start difference. First operand 1456 states and 5783 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:26,678 INFO L93 Difference]: Finished difference Result 3010 states and 11155 transitions. [2021-06-05 03:39:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:26,683 INFO L225 Difference]: With dead ends: 3010 [2021-06-05 03:39:26,683 INFO L226 Difference]: Without dead ends: 2835 [2021-06-05 03:39:26,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-06-05 03:39:26,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1496. [2021-06-05 03:39:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.9618729096989966) internal successors, (5923), 1495 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5923 transitions. [2021-06-05 03:39:26,743 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5923 transitions. Word has length 25 [2021-06-05 03:39:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:26,743 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5923 transitions. [2021-06-05 03:39:26,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5923 transitions. [2021-06-05 03:39:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:26,745 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:26,745 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:26,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 03:39:26,745 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:26,745 INFO L82 PathProgramCache]: Analyzing trace with hash -353260803, now seen corresponding path program 180 times [2021-06-05 03:39:26,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:26,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159038175] [2021-06-05 03:39:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:26,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:26,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159038175] [2021-06-05 03:39:26,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159038175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:26,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:26,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:26,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598753310] [2021-06-05 03:39:26,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:26,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:26,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:26,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:26,848 INFO L87 Difference]: Start difference. First operand 1496 states and 5923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:26,905 INFO L93 Difference]: Finished difference Result 2962 states and 10955 transitions. [2021-06-05 03:39:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:26,910 INFO L225 Difference]: With dead ends: 2962 [2021-06-05 03:39:26,911 INFO L226 Difference]: Without dead ends: 2684 [2021-06-05 03:39:26,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-06-05 03:39:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1440. [2021-06-05 03:39:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9798471160528144) internal successors, (5727), 1439 states have internal predecessors, (5727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5727 transitions. [2021-06-05 03:39:26,949 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5727 transitions. Word has length 25 [2021-06-05 03:39:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:26,949 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5727 transitions. [2021-06-05 03:39:26,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5727 transitions. [2021-06-05 03:39:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:26,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:26,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:26,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 03:39:26,951 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:26,951 INFO L82 PathProgramCache]: Analyzing trace with hash -645911871, now seen corresponding path program 181 times [2021-06-05 03:39:26,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:26,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418348118] [2021-06-05 03:39:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:27,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:27,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418348118] [2021-06-05 03:39:27,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418348118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:27,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:27,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:27,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128368864] [2021-06-05 03:39:27,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:27,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:27,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:27,037 INFO L87 Difference]: Start difference. First operand 1440 states and 5727 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:27,088 INFO L93 Difference]: Finished difference Result 2860 states and 10605 transitions. [2021-06-05 03:39:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:27,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:27,093 INFO L225 Difference]: With dead ends: 2860 [2021-06-05 03:39:27,094 INFO L226 Difference]: Without dead ends: 2701 [2021-06-05 03:39:27,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-06-05 03:39:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1464. [2021-06-05 03:39:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.971975393028025) internal successors, (5811), 1463 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5811 transitions. [2021-06-05 03:39:27,132 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5811 transitions. Word has length 25 [2021-06-05 03:39:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:27,132 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5811 transitions. [2021-06-05 03:39:27,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5811 transitions. [2021-06-05 03:39:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:27,134 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:27,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:27,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 03:39:27,134 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:27,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:27,135 INFO L82 PathProgramCache]: Analyzing trace with hash 362386113, now seen corresponding path program 182 times [2021-06-05 03:39:27,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:27,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900629428] [2021-06-05 03:39:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:27,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:27,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900629428] [2021-06-05 03:39:27,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900629428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:27,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:27,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342243947] [2021-06-05 03:39:27,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:27,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:27,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:27,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:27,224 INFO L87 Difference]: Start difference. First operand 1464 states and 5811 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:27,297 INFO L93 Difference]: Finished difference Result 2888 states and 10693 transitions. [2021-06-05 03:39:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:27,302 INFO L225 Difference]: With dead ends: 2888 [2021-06-05 03:39:27,302 INFO L226 Difference]: Without dead ends: 2685 [2021-06-05 03:39:27,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-06-05 03:39:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1448. [2021-06-05 03:39:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.977194194885971) internal successors, (5755), 1447 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5755 transitions. [2021-06-05 03:39:27,341 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5755 transitions. Word has length 25 [2021-06-05 03:39:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:27,341 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5755 transitions. [2021-06-05 03:39:27,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5755 transitions. [2021-06-05 03:39:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:27,343 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:27,343 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:27,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 03:39:27,343 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:27,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1532975775, now seen corresponding path program 183 times [2021-06-05 03:39:27,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:27,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873525053] [2021-06-05 03:39:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:27,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:27,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873525053] [2021-06-05 03:39:27,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873525053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:27,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:27,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:27,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571130234] [2021-06-05 03:39:27,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:27,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:27,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:27,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:27,421 INFO L87 Difference]: Start difference. First operand 1448 states and 5755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:27,473 INFO L93 Difference]: Finished difference Result 2816 states and 10445 transitions. [2021-06-05 03:39:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:27,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:27,479 INFO L225 Difference]: With dead ends: 2816 [2021-06-05 03:39:27,479 INFO L226 Difference]: Without dead ends: 2657 [2021-06-05 03:39:27,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-06-05 03:39:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1464. [2021-06-05 03:39:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9665071770334928) internal successors, (5803), 1463 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5803 transitions. [2021-06-05 03:39:27,520 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5803 transitions. Word has length 25 [2021-06-05 03:39:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:27,520 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5803 transitions. [2021-06-05 03:39:27,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5803 transitions. [2021-06-05 03:39:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:27,522 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:27,522 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:27,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 03:39:27,522 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash 887444161, now seen corresponding path program 184 times [2021-06-05 03:39:27,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:27,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533558570] [2021-06-05 03:39:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:27,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:27,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533558570] [2021-06-05 03:39:27,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533558570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:27,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:27,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932873043] [2021-06-05 03:39:27,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:27,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:27,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:27,600 INFO L87 Difference]: Start difference. First operand 1464 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:27,665 INFO L93 Difference]: Finished difference Result 2704 states and 10108 transitions. [2021-06-05 03:39:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:27,670 INFO L225 Difference]: With dead ends: 2704 [2021-06-05 03:39:27,670 INFO L226 Difference]: Without dead ends: 2513 [2021-06-05 03:39:27,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-06-05 03:39:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1448. [2021-06-05 03:39:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9716655148583278) internal successors, (5747), 1447 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5747 transitions. [2021-06-05 03:39:27,709 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5747 transitions. Word has length 25 [2021-06-05 03:39:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:27,709 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5747 transitions. [2021-06-05 03:39:27,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5747 transitions. [2021-06-05 03:39:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:27,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:27,711 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:27,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 03:39:27,711 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:27,711 INFO L82 PathProgramCache]: Analyzing trace with hash -2145199423, now seen corresponding path program 185 times [2021-06-05 03:39:27,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:27,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508162355] [2021-06-05 03:39:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:27,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:27,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508162355] [2021-06-05 03:39:27,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508162355] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:27,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:27,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:27,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757520592] [2021-06-05 03:39:27,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:27,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:27,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:27,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:27,788 INFO L87 Difference]: Start difference. First operand 1448 states and 5747 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:27,852 INFO L93 Difference]: Finished difference Result 2852 states and 10577 transitions. [2021-06-05 03:39:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:27,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:27,857 INFO L225 Difference]: With dead ends: 2852 [2021-06-05 03:39:27,858 INFO L226 Difference]: Without dead ends: 2665 [2021-06-05 03:39:27,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-06-05 03:39:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1472. [2021-06-05 03:39:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9585316111488784) internal successors, (5823), 1471 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5823 transitions. [2021-06-05 03:39:27,897 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5823 transitions. Word has length 25 [2021-06-05 03:39:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:27,897 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5823 transitions. [2021-06-05 03:39:27,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5823 transitions. [2021-06-05 03:39:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:27,899 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:27,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:27,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 03:39:27,899 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash 757623327, now seen corresponding path program 186 times [2021-06-05 03:39:27,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:27,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675211963] [2021-06-05 03:39:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:27,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:27,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675211963] [2021-06-05 03:39:27,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675211963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:27,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:27,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073973908] [2021-06-05 03:39:27,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:27,977 INFO L87 Difference]: Start difference. First operand 1472 states and 5823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:28,041 INFO L93 Difference]: Finished difference Result 2712 states and 10128 transitions. [2021-06-05 03:39:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:28,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:28,046 INFO L225 Difference]: With dead ends: 2712 [2021-06-05 03:39:28,046 INFO L226 Difference]: Without dead ends: 2505 [2021-06-05 03:39:28,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2021-06-05 03:39:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 1440. [2021-06-05 03:39:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.977067407922168) internal successors, (5723), 1439 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5723 transitions. [2021-06-05 03:39:28,084 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5723 transitions. Word has length 25 [2021-06-05 03:39:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:28,084 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5723 transitions. [2021-06-05 03:39:28,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5723 transitions. [2021-06-05 03:39:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:28,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:28,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:28,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 03:39:28,087 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:28,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:28,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1056797377, now seen corresponding path program 187 times [2021-06-05 03:39:28,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:28,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32528780] [2021-06-05 03:39:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:28,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:28,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32528780] [2021-06-05 03:39:28,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32528780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:28,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:28,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:28,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239747125] [2021-06-05 03:39:28,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:28,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:28,165 INFO L87 Difference]: Start difference. First operand 1440 states and 5723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:28,229 INFO L93 Difference]: Finished difference Result 3057 states and 11371 transitions. [2021-06-05 03:39:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:28,235 INFO L225 Difference]: With dead ends: 3057 [2021-06-05 03:39:28,235 INFO L226 Difference]: Without dead ends: 2870 [2021-06-05 03:39:28,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:28,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-06-05 03:39:28,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2021-06-05 03:39:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9723533378287255) internal successors, (5891), 1483 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5891 transitions. [2021-06-05 03:39:28,277 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5891 transitions. Word has length 25 [2021-06-05 03:39:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:28,277 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5891 transitions. [2021-06-05 03:39:28,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5891 transitions. [2021-06-05 03:39:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:28,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:28,279 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:28,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 03:39:28,279 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:28,280 INFO L82 PathProgramCache]: Analyzing trace with hash -335347169, now seen corresponding path program 188 times [2021-06-05 03:39:28,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:28,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105806673] [2021-06-05 03:39:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:28,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:28,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105806673] [2021-06-05 03:39:28,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105806673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:28,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:28,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:28,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760044093] [2021-06-05 03:39:28,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:28,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:28,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:28,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:28,357 INFO L87 Difference]: Start difference. First operand 1484 states and 5891 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:28,420 INFO L93 Difference]: Finished difference Result 3045 states and 11307 transitions. [2021-06-05 03:39:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:28,426 INFO L225 Difference]: With dead ends: 3045 [2021-06-05 03:39:28,426 INFO L226 Difference]: Without dead ends: 2846 [2021-06-05 03:39:28,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-06-05 03:39:28,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1460. [2021-06-05 03:39:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.977381768334476) internal successors, (5803), 1459 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2021-06-05 03:39:28,468 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2021-06-05 03:39:28,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:28,468 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2021-06-05 03:39:28,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2021-06-05 03:39:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:28,470 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:28,470 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:28,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 03:39:28,470 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash -764238049, now seen corresponding path program 189 times [2021-06-05 03:39:28,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:28,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036678702] [2021-06-05 03:39:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:28,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:28,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036678702] [2021-06-05 03:39:28,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036678702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:28,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:28,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:28,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404560035] [2021-06-05 03:39:28,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:28,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:28,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:28,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:28,552 INFO L87 Difference]: Start difference. First operand 1460 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:28,617 INFO L93 Difference]: Finished difference Result 3080 states and 11418 transitions. [2021-06-05 03:39:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:28,622 INFO L225 Difference]: With dead ends: 3080 [2021-06-05 03:39:28,623 INFO L226 Difference]: Without dead ends: 2893 [2021-06-05 03:39:28,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-06-05 03:39:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1506. [2021-06-05 03:39:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9601328903654487) internal successors, (5960), 1505 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5960 transitions. [2021-06-05 03:39:28,665 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5960 transitions. Word has length 25 [2021-06-05 03:39:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:28,665 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5960 transitions. [2021-06-05 03:39:28,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5960 transitions. [2021-06-05 03:39:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:28,667 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:28,667 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:28,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 03:39:28,667 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:28,667 INFO L82 PathProgramCache]: Analyzing trace with hash 604522399, now seen corresponding path program 190 times [2021-06-05 03:39:28,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:28,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212757269] [2021-06-05 03:39:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:28,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:28,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212757269] [2021-06-05 03:39:28,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212757269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:28,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:28,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:28,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138704857] [2021-06-05 03:39:28,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:28,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:28,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:28,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:28,753 INFO L87 Difference]: Start difference. First operand 1506 states and 5960 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:28,810 INFO L93 Difference]: Finished difference Result 3115 states and 11507 transitions. [2021-06-05 03:39:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:28,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:28,815 INFO L225 Difference]: With dead ends: 3115 [2021-06-05 03:39:28,816 INFO L226 Difference]: Without dead ends: 2847 [2021-06-05 03:39:28,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-06-05 03:39:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1460. [2021-06-05 03:39:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9636737491432488) internal successors, (5783), 1459 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5783 transitions. [2021-06-05 03:39:28,856 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5783 transitions. Word has length 25 [2021-06-05 03:39:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:28,856 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5783 transitions. [2021-06-05 03:39:28,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5783 transitions. [2021-06-05 03:39:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:28,858 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:28,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:28,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 03:39:28,858 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash -399980675, now seen corresponding path program 191 times [2021-06-05 03:39:28,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:28,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041184585] [2021-06-05 03:39:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:28,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:28,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041184585] [2021-06-05 03:39:28,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041184585] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:28,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:28,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:28,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819823753] [2021-06-05 03:39:28,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:28,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:28,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:28,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:28,956 INFO L87 Difference]: Start difference. First operand 1460 states and 5783 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:29,017 INFO L93 Difference]: Finished difference Result 3050 states and 11295 transitions. [2021-06-05 03:39:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:29,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:29,023 INFO L225 Difference]: With dead ends: 3050 [2021-06-05 03:39:29,023 INFO L226 Difference]: Without dead ends: 2875 [2021-06-05 03:39:29,023 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-06-05 03:39:29,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1500. [2021-06-05 03:39:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.95130086724483) internal successors, (5923), 1499 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5923 transitions. [2021-06-05 03:39:29,064 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5923 transitions. Word has length 25 [2021-06-05 03:39:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:29,064 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5923 transitions. [2021-06-05 03:39:29,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5923 transitions. [2021-06-05 03:39:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:29,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:29,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:29,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 03:39:29,066 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash -181629089, now seen corresponding path program 192 times [2021-06-05 03:39:29,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:29,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415269621] [2021-06-05 03:39:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:29,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:29,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415269621] [2021-06-05 03:39:29,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415269621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:29,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:29,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:29,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934128538] [2021-06-05 03:39:29,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:29,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:29,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:29,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:29,177 INFO L87 Difference]: Start difference. First operand 1500 states and 5923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:29,245 INFO L93 Difference]: Finished difference Result 3002 states and 11095 transitions. [2021-06-05 03:39:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:29,250 INFO L225 Difference]: With dead ends: 3002 [2021-06-05 03:39:29,250 INFO L226 Difference]: Without dead ends: 2712 [2021-06-05 03:39:29,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-06-05 03:39:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1432. [2021-06-05 03:39:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9825296995108315) internal successors, (5699), 1431 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5699 transitions. [2021-06-05 03:39:29,289 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5699 transitions. Word has length 25 [2021-06-05 03:39:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:29,290 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5699 transitions. [2021-06-05 03:39:29,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5699 transitions. [2021-06-05 03:39:29,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:29,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:29,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:29,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 03:39:29,292 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash 498166553, now seen corresponding path program 193 times [2021-06-05 03:39:29,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:29,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107942055] [2021-06-05 03:39:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:29,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:29,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107942055] [2021-06-05 03:39:29,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107942055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:29,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:29,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:29,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357857863] [2021-06-05 03:39:29,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:29,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:29,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:29,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:29,383 INFO L87 Difference]: Start difference. First operand 1432 states and 5699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:29,434 INFO L93 Difference]: Finished difference Result 2797 states and 10356 transitions. [2021-06-05 03:39:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:29,440 INFO L225 Difference]: With dead ends: 2797 [2021-06-05 03:39:29,440 INFO L226 Difference]: Without dead ends: 2638 [2021-06-05 03:39:29,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-06-05 03:39:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1460. [2021-06-05 03:39:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.977381768334476) internal successors, (5803), 1459 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2021-06-05 03:39:29,479 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2021-06-05 03:39:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:29,479 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2021-06-05 03:39:29,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2021-06-05 03:39:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:29,481 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:29,481 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:29,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 03:39:29,481 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:29,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1091768197, now seen corresponding path program 194 times [2021-06-05 03:39:29,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:29,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124157435] [2021-06-05 03:39:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:29,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:29,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124157435] [2021-06-05 03:39:29,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124157435] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:29,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:29,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:29,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111604255] [2021-06-05 03:39:29,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:29,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:29,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:29,572 INFO L87 Difference]: Start difference. First operand 1460 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:29,640 INFO L93 Difference]: Finished difference Result 2827 states and 10449 transitions. [2021-06-05 03:39:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:29,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:29,645 INFO L225 Difference]: With dead ends: 2827 [2021-06-05 03:39:29,645 INFO L226 Difference]: Without dead ends: 2622 [2021-06-05 03:39:29,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-06-05 03:39:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1444. [2021-06-05 03:39:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9826749826749825) internal successors, (5747), 1443 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5747 transitions. [2021-06-05 03:39:29,684 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5747 transitions. Word has length 25 [2021-06-05 03:39:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:29,684 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5747 transitions. [2021-06-05 03:39:29,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5747 transitions. [2021-06-05 03:39:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:29,686 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:29,686 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:29,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 03:39:29,686 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1579229179, now seen corresponding path program 195 times [2021-06-05 03:39:29,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:29,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849536848] [2021-06-05 03:39:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:29,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:29,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849536848] [2021-06-05 03:39:29,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849536848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:29,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:29,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:29,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455530491] [2021-06-05 03:39:29,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:29,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:29,795 INFO L87 Difference]: Start difference. First operand 1444 states and 5747 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:29,852 INFO L93 Difference]: Finished difference Result 2795 states and 10343 transitions. [2021-06-05 03:39:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:29,857 INFO L225 Difference]: With dead ends: 2795 [2021-06-05 03:39:29,857 INFO L226 Difference]: Without dead ends: 2636 [2021-06-05 03:39:29,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-06-05 03:39:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1460. [2021-06-05 03:39:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.971898560657985) internal successors, (5795), 1459 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2021-06-05 03:39:29,895 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2021-06-05 03:39:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:29,895 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2021-06-05 03:39:29,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2021-06-05 03:39:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:29,897 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:29,897 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:29,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 03:39:29,897 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:29,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1707440133, now seen corresponding path program 196 times [2021-06-05 03:39:29,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:29,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713040916] [2021-06-05 03:39:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:29,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:29,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713040916] [2021-06-05 03:39:29,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713040916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:29,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:29,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:29,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078128404] [2021-06-05 03:39:29,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:29,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:29,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:29,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:29,990 INFO L87 Difference]: Start difference. First operand 1460 states and 5795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:30,054 INFO L93 Difference]: Finished difference Result 2823 states and 10431 transitions. [2021-06-05 03:39:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:30,059 INFO L225 Difference]: With dead ends: 2823 [2021-06-05 03:39:30,059 INFO L226 Difference]: Without dead ends: 2620 [2021-06-05 03:39:30,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-06-05 03:39:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1444. [2021-06-05 03:39:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9771309771309773) internal successors, (5739), 1443 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2021-06-05 03:39:30,097 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2021-06-05 03:39:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:30,097 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2021-06-05 03:39:30,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2021-06-05 03:39:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:30,099 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:30,099 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:30,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 03:39:30,100 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1298576163, now seen corresponding path program 197 times [2021-06-05 03:39:30,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:30,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741373967] [2021-06-05 03:39:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:30,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:30,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741373967] [2021-06-05 03:39:30,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741373967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:30,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:30,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:30,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883349071] [2021-06-05 03:39:30,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:30,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:30,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:30,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:30,193 INFO L87 Difference]: Start difference. First operand 1444 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:30,256 INFO L93 Difference]: Finished difference Result 2869 states and 10612 transitions. [2021-06-05 03:39:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:30,261 INFO L225 Difference]: With dead ends: 2869 [2021-06-05 03:39:30,261 INFO L226 Difference]: Without dead ends: 2680 [2021-06-05 03:39:30,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-06-05 03:39:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1474. [2021-06-05 03:39:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9592668024439917) internal successors, (5832), 1473 states have internal predecessors, (5832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5832 transitions. [2021-06-05 03:39:30,299 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5832 transitions. Word has length 25 [2021-06-05 03:39:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:30,299 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5832 transitions. [2021-06-05 03:39:30,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5832 transitions. [2021-06-05 03:39:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:30,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:30,302 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:30,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 03:39:30,302 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 953054139, now seen corresponding path program 198 times [2021-06-05 03:39:30,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:30,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42514509] [2021-06-05 03:39:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:30,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:30,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42514509] [2021-06-05 03:39:30,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42514509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:30,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:30,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:30,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094248807] [2021-06-05 03:39:30,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:30,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:30,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:30,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:30,386 INFO L87 Difference]: Start difference. First operand 1474 states and 5832 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:30,449 INFO L93 Difference]: Finished difference Result 2867 states and 10577 transitions. [2021-06-05 03:39:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:30,455 INFO L225 Difference]: With dead ends: 2867 [2021-06-05 03:39:30,455 INFO L226 Difference]: Without dead ends: 2642 [2021-06-05 03:39:30,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-06-05 03:39:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1436. [2021-06-05 03:39:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9825783972125435) internal successors, (5715), 1435 states have internal predecessors, (5715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5715 transitions. [2021-06-05 03:39:30,494 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5715 transitions. Word has length 25 [2021-06-05 03:39:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:30,494 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5715 transitions. [2021-06-05 03:39:30,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5715 transitions. [2021-06-05 03:39:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:30,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:30,496 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:30,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 03:39:30,496 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:30,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:30,496 INFO L82 PathProgramCache]: Analyzing trace with hash -675793157, now seen corresponding path program 199 times [2021-06-05 03:39:30,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:30,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106816500] [2021-06-05 03:39:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:30,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:30,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106816500] [2021-06-05 03:39:30,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106816500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:30,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:30,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:30,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50227757] [2021-06-05 03:39:30,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:30,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:30,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:30,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:30,589 INFO L87 Difference]: Start difference. First operand 1436 states and 5715 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:30,645 INFO L93 Difference]: Finished difference Result 2763 states and 10225 transitions. [2021-06-05 03:39:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:30,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:30,650 INFO L225 Difference]: With dead ends: 2763 [2021-06-05 03:39:30,650 INFO L226 Difference]: Without dead ends: 2604 [2021-06-05 03:39:30,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-06-05 03:39:30,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1460. [2021-06-05 03:39:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9746401644962304) internal successors, (5799), 1459 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5799 transitions. [2021-06-05 03:39:30,688 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5799 transitions. Word has length 25 [2021-06-05 03:39:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:30,688 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5799 transitions. [2021-06-05 03:39:30,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5799 transitions. [2021-06-05 03:39:30,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:30,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:30,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:30,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 03:39:30,691 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:30,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2029239389, now seen corresponding path program 200 times [2021-06-05 03:39:30,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:30,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053291525] [2021-06-05 03:39:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:30,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:30,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053291525] [2021-06-05 03:39:30,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053291525] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:30,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:30,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:30,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300557162] [2021-06-05 03:39:30,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:30,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:30,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:30,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:30,783 INFO L87 Difference]: Start difference. First operand 1460 states and 5799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:30,852 INFO L93 Difference]: Finished difference Result 2793 states and 10318 transitions. [2021-06-05 03:39:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:30,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:30,857 INFO L225 Difference]: With dead ends: 2793 [2021-06-05 03:39:30,857 INFO L226 Difference]: Without dead ends: 2588 [2021-06-05 03:39:30,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-06-05 03:39:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1444. [2021-06-05 03:39:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9799029799029797) internal successors, (5743), 1443 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5743 transitions. [2021-06-05 03:39:30,896 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5743 transitions. Word has length 25 [2021-06-05 03:39:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:30,896 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5743 transitions. [2021-06-05 03:39:30,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5743 transitions. [2021-06-05 03:39:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:30,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:30,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:30,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 03:39:30,898 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:30,898 INFO L82 PathProgramCache]: Analyzing trace with hash -626225413, now seen corresponding path program 201 times [2021-06-05 03:39:30,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:30,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127887824] [2021-06-05 03:39:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:30,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:30,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127887824] [2021-06-05 03:39:30,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127887824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:30,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:30,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:30,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978322249] [2021-06-05 03:39:30,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:30,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:30,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:30,985 INFO L87 Difference]: Start difference. First operand 1444 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:31,037 INFO L93 Difference]: Finished difference Result 2717 states and 10060 transitions. [2021-06-05 03:39:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:31,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:31,042 INFO L225 Difference]: With dead ends: 2717 [2021-06-05 03:39:31,042 INFO L226 Difference]: Without dead ends: 2558 [2021-06-05 03:39:31,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:31,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-06-05 03:39:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1460. [2021-06-05 03:39:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9691569568197393) internal successors, (5791), 1459 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5791 transitions. [2021-06-05 03:39:31,080 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5791 transitions. Word has length 25 [2021-06-05 03:39:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:31,080 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5791 transitions. [2021-06-05 03:39:31,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5791 transitions. [2021-06-05 03:39:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:31,082 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:31,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:31,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 03:39:31,082 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1726469883, now seen corresponding path program 202 times [2021-06-05 03:39:31,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:31,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012604892] [2021-06-05 03:39:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:31,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:31,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012604892] [2021-06-05 03:39:31,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012604892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:31,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:31,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:31,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124644334] [2021-06-05 03:39:31,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:31,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:31,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:31,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:31,168 INFO L87 Difference]: Start difference. First operand 1460 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:31,232 INFO L93 Difference]: Finished difference Result 2605 states and 9723 transitions. [2021-06-05 03:39:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:31,237 INFO L225 Difference]: With dead ends: 2605 [2021-06-05 03:39:31,237 INFO L226 Difference]: Without dead ends: 2414 [2021-06-05 03:39:31,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2021-06-05 03:39:31,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1444. [2021-06-05 03:39:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9743589743589745) internal successors, (5735), 1443 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5735 transitions. [2021-06-05 03:39:31,274 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5735 transitions. Word has length 25 [2021-06-05 03:39:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:31,274 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5735 transitions. [2021-06-05 03:39:31,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5735 transitions. [2021-06-05 03:39:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:31,276 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:31,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:31,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 03:39:31,276 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:31,276 INFO L82 PathProgramCache]: Analyzing trace with hash 790936541, now seen corresponding path program 203 times [2021-06-05 03:39:31,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:31,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513706677] [2021-06-05 03:39:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:31,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:31,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513706677] [2021-06-05 03:39:31,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513706677] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:31,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:31,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:31,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365937068] [2021-06-05 03:39:31,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:31,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:31,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:31,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:31,372 INFO L87 Difference]: Start difference. First operand 1444 states and 5735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:31,438 INFO L93 Difference]: Finished difference Result 2755 states and 10197 transitions. [2021-06-05 03:39:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:31,444 INFO L225 Difference]: With dead ends: 2755 [2021-06-05 03:39:31,444 INFO L226 Difference]: Without dead ends: 2566 [2021-06-05 03:39:31,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-06-05 03:39:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1468. [2021-06-05 03:39:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9611451942740286) internal successors, (5811), 1467 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5811 transitions. [2021-06-05 03:39:31,483 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5811 transitions. Word has length 25 [2021-06-05 03:39:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:31,483 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5811 transitions. [2021-06-05 03:39:31,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5811 transitions. [2021-06-05 03:39:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:31,485 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:31,485 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:31,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 03:39:31,485 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:31,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash 49984443, now seen corresponding path program 204 times [2021-06-05 03:39:31,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:31,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216955733] [2021-06-05 03:39:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:31,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:31,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216955733] [2021-06-05 03:39:31,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216955733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:31,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:31,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:31,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354852317] [2021-06-05 03:39:31,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:31,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:31,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:31,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:31,584 INFO L87 Difference]: Start difference. First operand 1468 states and 5811 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:31,649 INFO L93 Difference]: Finished difference Result 2613 states and 9743 transitions. [2021-06-05 03:39:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:31,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:31,653 INFO L225 Difference]: With dead ends: 2613 [2021-06-05 03:39:31,653 INFO L226 Difference]: Without dead ends: 2406 [2021-06-05 03:39:31,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-06-05 03:39:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1436. [2021-06-05 03:39:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9797909407665504) internal successors, (5711), 1435 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5711 transitions. [2021-06-05 03:39:31,703 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5711 transitions. Word has length 25 [2021-06-05 03:39:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:31,703 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5711 transitions. [2021-06-05 03:39:31,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5711 transitions. [2021-06-05 03:39:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:31,705 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:31,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:31,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 03:39:31,705 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash -287788195, now seen corresponding path program 205 times [2021-06-05 03:39:31,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:31,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446039371] [2021-06-05 03:39:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:31,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:31,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446039371] [2021-06-05 03:39:31,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446039371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:31,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:31,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:31,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201399080] [2021-06-05 03:39:31,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:31,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:31,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:31,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:31,792 INFO L87 Difference]: Start difference. First operand 1436 states and 5711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:31,849 INFO L93 Difference]: Finished difference Result 2759 states and 10211 transitions. [2021-06-05 03:39:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:31,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:31,854 INFO L225 Difference]: With dead ends: 2759 [2021-06-05 03:39:31,855 INFO L226 Difference]: Without dead ends: 2600 [2021-06-05 03:39:31,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-06-05 03:39:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1460. [2021-06-05 03:39:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.971898560657985) internal successors, (5795), 1459 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2021-06-05 03:39:31,899 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2021-06-05 03:39:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:31,899 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2021-06-05 03:39:31,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2021-06-05 03:39:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:31,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:31,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:31,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 03:39:31,902 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:31,902 INFO L82 PathProgramCache]: Analyzing trace with hash 720509789, now seen corresponding path program 206 times [2021-06-05 03:39:31,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:31,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533103347] [2021-06-05 03:39:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:31,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:31,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533103347] [2021-06-05 03:39:31,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533103347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:31,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:31,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:31,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689824554] [2021-06-05 03:39:31,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:31,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:31,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:31,992 INFO L87 Difference]: Start difference. First operand 1460 states and 5795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:32,056 INFO L93 Difference]: Finished difference Result 2787 states and 10299 transitions. [2021-06-05 03:39:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:32,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:32,061 INFO L225 Difference]: With dead ends: 2787 [2021-06-05 03:39:32,061 INFO L226 Difference]: Without dead ends: 2584 [2021-06-05 03:39:32,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-06-05 03:39:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1444. [2021-06-05 03:39:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9771309771309773) internal successors, (5739), 1443 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2021-06-05 03:39:32,100 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2021-06-05 03:39:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:32,100 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2021-06-05 03:39:32,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2021-06-05 03:39:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:32,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:32,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:32,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 03:39:32,102 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:32,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1891099451, now seen corresponding path program 207 times [2021-06-05 03:39:32,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:32,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997436968] [2021-06-05 03:39:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:32,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:32,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997436968] [2021-06-05 03:39:32,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997436968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:32,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:32,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:32,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897059638] [2021-06-05 03:39:32,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:32,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:32,180 INFO L87 Difference]: Start difference. First operand 1444 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:32,232 INFO L93 Difference]: Finished difference Result 2715 states and 10051 transitions. [2021-06-05 03:39:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:32,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:32,237 INFO L225 Difference]: With dead ends: 2715 [2021-06-05 03:39:32,237 INFO L226 Difference]: Without dead ends: 2556 [2021-06-05 03:39:32,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-06-05 03:39:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1460. [2021-06-05 03:39:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9664153529814943) internal successors, (5787), 1459 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5787 transitions. [2021-06-05 03:39:32,275 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5787 transitions. Word has length 25 [2021-06-05 03:39:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:32,275 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5787 transitions. [2021-06-05 03:39:32,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5787 transitions. [2021-06-05 03:39:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:32,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:32,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:32,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 03:39:32,277 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:32,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1245567837, now seen corresponding path program 208 times [2021-06-05 03:39:32,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:32,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40118383] [2021-06-05 03:39:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:32,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:32,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40118383] [2021-06-05 03:39:32,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40118383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:32,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:32,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:32,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510165682] [2021-06-05 03:39:32,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:32,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:32,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:32,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:32,356 INFO L87 Difference]: Start difference. First operand 1460 states and 5787 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:32,425 INFO L93 Difference]: Finished difference Result 2603 states and 9714 transitions. [2021-06-05 03:39:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:32,430 INFO L225 Difference]: With dead ends: 2603 [2021-06-05 03:39:32,430 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 03:39:32,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 03:39:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1444. [2021-06-05 03:39:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9715869715869716) internal successors, (5731), 1443 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5731 transitions. [2021-06-05 03:39:32,468 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5731 transitions. Word has length 25 [2021-06-05 03:39:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:32,468 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5731 transitions. [2021-06-05 03:39:32,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5731 transitions. [2021-06-05 03:39:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:32,470 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:32,470 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:32,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 03:39:32,470 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1787075747, now seen corresponding path program 209 times [2021-06-05 03:39:32,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:32,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228555188] [2021-06-05 03:39:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:32,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:32,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228555188] [2021-06-05 03:39:32,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228555188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:32,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:32,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:32,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904260643] [2021-06-05 03:39:32,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:32,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:32,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:32,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:32,547 INFO L87 Difference]: Start difference. First operand 1444 states and 5731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:32,613 INFO L93 Difference]: Finished difference Result 2751 states and 10183 transitions. [2021-06-05 03:39:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:32,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:32,618 INFO L225 Difference]: With dead ends: 2751 [2021-06-05 03:39:32,618 INFO L226 Difference]: Without dead ends: 2564 [2021-06-05 03:39:32,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-06-05 03:39:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1468. [2021-06-05 03:39:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.958418541240627) internal successors, (5807), 1467 states have internal predecessors, (5807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5807 transitions. [2021-06-05 03:39:32,657 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5807 transitions. Word has length 25 [2021-06-05 03:39:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:32,657 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5807 transitions. [2021-06-05 03:39:32,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5807 transitions. [2021-06-05 03:39:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:32,659 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:32,659 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:32,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 03:39:32,659 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:32,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1115747003, now seen corresponding path program 210 times [2021-06-05 03:39:32,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:32,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338240121] [2021-06-05 03:39:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:32,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:32,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338240121] [2021-06-05 03:39:32,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338240121] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:32,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:32,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:32,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077866125] [2021-06-05 03:39:32,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:32,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:32,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:32,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:32,737 INFO L87 Difference]: Start difference. First operand 1468 states and 5807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:32,802 INFO L93 Difference]: Finished difference Result 2611 states and 9734 transitions. [2021-06-05 03:39:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:32,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:32,806 INFO L225 Difference]: With dead ends: 2611 [2021-06-05 03:39:32,807 INFO L226 Difference]: Without dead ends: 2404 [2021-06-05 03:39:32,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-06-05 03:39:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1436. [2021-06-05 03:39:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9770034843205573) internal successors, (5707), 1435 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5707 transitions. [2021-06-05 03:39:32,844 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5707 transitions. Word has length 25 [2021-06-05 03:39:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:32,844 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5707 transitions. [2021-06-05 03:39:32,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5707 transitions. [2021-06-05 03:39:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:32,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:32,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:32,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 03:39:32,846 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 436316095, now seen corresponding path program 211 times [2021-06-05 03:39:32,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:32,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578818118] [2021-06-05 03:39:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:32,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:32,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578818118] [2021-06-05 03:39:32,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578818118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:32,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:32,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:32,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380688049] [2021-06-05 03:39:32,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:32,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:32,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:32,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:32,927 INFO L87 Difference]: Start difference. First operand 1436 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:33,009 INFO L93 Difference]: Finished difference Result 2875 states and 10649 transitions. [2021-06-05 03:39:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:33,015 INFO L225 Difference]: With dead ends: 2875 [2021-06-05 03:39:33,015 INFO L226 Difference]: Without dead ends: 2686 [2021-06-05 03:39:33,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-06-05 03:39:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1478. [2021-06-05 03:39:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.964793500338524) internal successors, (5856), 1477 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5856 transitions. [2021-06-05 03:39:33,054 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5856 transitions. Word has length 25 [2021-06-05 03:39:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:33,054 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5856 transitions. [2021-06-05 03:39:33,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5856 transitions. [2021-06-05 03:39:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:33,056 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:33,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:33,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 03:39:33,056 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:33,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1607020899, now seen corresponding path program 212 times [2021-06-05 03:39:33,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:33,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985755162] [2021-06-05 03:39:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:33,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:33,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985755162] [2021-06-05 03:39:33,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985755162] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:33,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:33,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:33,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143298561] [2021-06-05 03:39:33,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:33,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:33,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:33,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:33,133 INFO L87 Difference]: Start difference. First operand 1478 states and 5856 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:33,194 INFO L93 Difference]: Finished difference Result 2873 states and 10614 transitions. [2021-06-05 03:39:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:33,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:33,199 INFO L225 Difference]: With dead ends: 2873 [2021-06-05 03:39:33,199 INFO L226 Difference]: Without dead ends: 2656 [2021-06-05 03:39:33,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-06-05 03:39:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1448. [2021-06-05 03:39:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9744298548721493) internal successors, (5751), 1447 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5751 transitions. [2021-06-05 03:39:33,239 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5751 transitions. Word has length 25 [2021-06-05 03:39:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:33,239 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5751 transitions. [2021-06-05 03:39:33,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5751 transitions. [2021-06-05 03:39:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:33,241 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:33,241 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:33,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 03:39:33,241 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:33,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1679763555, now seen corresponding path program 213 times [2021-06-05 03:39:33,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:33,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617869520] [2021-06-05 03:39:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:33,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:33,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617869520] [2021-06-05 03:39:33,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617869520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:33,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:33,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:33,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013332186] [2021-06-05 03:39:33,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:33,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:33,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:33,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:33,328 INFO L87 Difference]: Start difference. First operand 1448 states and 5751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:33,390 INFO L93 Difference]: Finished difference Result 2795 states and 10353 transitions. [2021-06-05 03:39:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:33,395 INFO L225 Difference]: With dead ends: 2795 [2021-06-05 03:39:33,395 INFO L226 Difference]: Without dead ends: 2606 [2021-06-05 03:39:33,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-06-05 03:39:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1472. [2021-06-05 03:39:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9612508497620667) internal successors, (5827), 1471 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5827 transitions. [2021-06-05 03:39:33,434 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5827 transitions. Word has length 25 [2021-06-05 03:39:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:33,434 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5827 transitions. [2021-06-05 03:39:33,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5827 transitions. [2021-06-05 03:39:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:33,436 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:33,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:33,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 03:39:33,436 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:33,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1123975267, now seen corresponding path program 214 times [2021-06-05 03:39:33,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:33,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271795252] [2021-06-05 03:39:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:33,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:33,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271795252] [2021-06-05 03:39:33,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271795252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:33,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:33,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:33,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581950388] [2021-06-05 03:39:33,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:33,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:33,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:33,525 INFO L87 Difference]: Start difference. First operand 1472 states and 5827 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:33,587 INFO L93 Difference]: Finished difference Result 2653 states and 9899 transitions. [2021-06-05 03:39:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:33,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:33,592 INFO L225 Difference]: With dead ends: 2653 [2021-06-05 03:39:33,592 INFO L226 Difference]: Without dead ends: 2454 [2021-06-05 03:39:33,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-06-05 03:39:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 1448. [2021-06-05 03:39:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9661368348306842) internal successors, (5739), 1447 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5739 transitions. [2021-06-05 03:39:33,629 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5739 transitions. Word has length 25 [2021-06-05 03:39:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:33,629 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5739 transitions. [2021-06-05 03:39:33,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5739 transitions. [2021-06-05 03:39:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:33,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:33,631 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:33,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 03:39:33,631 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash -697415941, now seen corresponding path program 215 times [2021-06-05 03:39:33,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:33,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098553542] [2021-06-05 03:39:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:33,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:33,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098553542] [2021-06-05 03:39:33,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098553542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:33,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:33,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:33,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11834189] [2021-06-05 03:39:33,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:33,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:33,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:33,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:33,708 INFO L87 Difference]: Start difference. First operand 1448 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:33,770 INFO L93 Difference]: Finished difference Result 2793 states and 10336 transitions. [2021-06-05 03:39:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:33,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:33,775 INFO L225 Difference]: With dead ends: 2793 [2021-06-05 03:39:33,775 INFO L226 Difference]: Without dead ends: 2606 [2021-06-05 03:39:33,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-06-05 03:39:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1472. [2021-06-05 03:39:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9530931339225015) internal successors, (5815), 1471 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5815 transitions. [2021-06-05 03:39:33,814 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5815 transitions. Word has length 25 [2021-06-05 03:39:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:33,814 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5815 transitions. [2021-06-05 03:39:33,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5815 transitions. [2021-06-05 03:39:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:33,816 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:33,816 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:33,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 03:39:33,816 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:33,816 INFO L82 PathProgramCache]: Analyzing trace with hash -904223907, now seen corresponding path program 216 times [2021-06-05 03:39:33,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:33,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307519566] [2021-06-05 03:39:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:33,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:33,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307519566] [2021-06-05 03:39:33,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307519566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:33,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:33,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:33,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135461656] [2021-06-05 03:39:33,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:33,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:33,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:33,892 INFO L87 Difference]: Start difference. First operand 1472 states and 5815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:33,958 INFO L93 Difference]: Finished difference Result 2653 states and 9887 transitions. [2021-06-05 03:39:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:33,963 INFO L225 Difference]: With dead ends: 2653 [2021-06-05 03:39:33,963 INFO L226 Difference]: Without dead ends: 2438 [2021-06-05 03:39:33,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:33,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-06-05 03:39:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1432. [2021-06-05 03:39:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.981132075471698) internal successors, (5697), 1431 states have internal predecessors, (5697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5697 transitions. [2021-06-05 03:39:34,000 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5697 transitions. Word has length 25 [2021-06-05 03:39:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:34,000 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5697 transitions. [2021-06-05 03:39:34,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5697 transitions. [2021-06-05 03:39:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:34,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:34,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:34,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 03:39:34,003 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1532080991, now seen corresponding path program 217 times [2021-06-05 03:39:34,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:34,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815598951] [2021-06-05 03:39:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:34,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:34,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815598951] [2021-06-05 03:39:34,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815598951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:34,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:34,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:34,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363145448] [2021-06-05 03:39:34,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:34,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:34,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:34,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:34,080 INFO L87 Difference]: Start difference. First operand 1432 states and 5697 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:34,152 INFO L93 Difference]: Finished difference Result 3154 states and 11754 transitions. [2021-06-05 03:39:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:34,158 INFO L225 Difference]: With dead ends: 3154 [2021-06-05 03:39:34,158 INFO L226 Difference]: Without dead ends: 2965 [2021-06-05 03:39:34,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2021-06-05 03:39:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1492. [2021-06-05 03:39:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.9738430583501008) internal successors, (5925), 1491 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5925 transitions. [2021-06-05 03:39:34,199 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5925 transitions. Word has length 25 [2021-06-05 03:39:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:34,199 INFO L482 AbstractCegarLoop]: Abstraction has 1492 states and 5925 transitions. [2021-06-05 03:39:34,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5925 transitions. [2021-06-05 03:39:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:34,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:34,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:34,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 03:39:34,202 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash 719549311, now seen corresponding path program 218 times [2021-06-05 03:39:34,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:34,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723219974] [2021-06-05 03:39:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:34,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:34,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723219974] [2021-06-05 03:39:34,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723219974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:34,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:34,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:34,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929591639] [2021-06-05 03:39:34,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:34,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:34,278 INFO L87 Difference]: Start difference. First operand 1492 states and 5925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:34,343 INFO L93 Difference]: Finished difference Result 3152 states and 11719 transitions. [2021-06-05 03:39:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:34,349 INFO L225 Difference]: With dead ends: 3152 [2021-06-05 03:39:34,349 INFO L226 Difference]: Without dead ends: 2935 [2021-06-05 03:39:34,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-06-05 03:39:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1462. [2021-06-05 03:39:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9835728952772076) internal successors, (5820), 1461 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5820 transitions. [2021-06-05 03:39:34,390 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5820 transitions. Word has length 25 [2021-06-05 03:39:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:34,390 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5820 transitions. [2021-06-05 03:39:34,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5820 transitions. [2021-06-05 03:39:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:34,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:34,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:34,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 03:39:34,393 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash 646806655, now seen corresponding path program 219 times [2021-06-05 03:39:34,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:34,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460647852] [2021-06-05 03:39:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:34,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:34,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460647852] [2021-06-05 03:39:34,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460647852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:34,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:34,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:34,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512513150] [2021-06-05 03:39:34,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:34,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:34,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:34,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:34,480 INFO L87 Difference]: Start difference. First operand 1462 states and 5820 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:34,542 INFO L93 Difference]: Finished difference Result 3136 states and 11679 transitions. [2021-06-05 03:39:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:34,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:34,548 INFO L225 Difference]: With dead ends: 3136 [2021-06-05 03:39:34,549 INFO L226 Difference]: Without dead ends: 2947 [2021-06-05 03:39:34,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-06-05 03:39:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1486. [2021-06-05 03:39:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9703703703703703) internal successors, (5896), 1485 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5896 transitions. [2021-06-05 03:39:34,590 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5896 transitions. Word has length 25 [2021-06-05 03:39:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:34,590 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5896 transitions. [2021-06-05 03:39:34,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5896 transitions. [2021-06-05 03:39:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:34,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:34,593 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:34,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 03:39:34,593 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1202594943, now seen corresponding path program 220 times [2021-06-05 03:39:34,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:34,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330604796] [2021-06-05 03:39:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:34,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:34,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330604796] [2021-06-05 03:39:34,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330604796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:34,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:34,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:34,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906781222] [2021-06-05 03:39:34,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:34,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:34,680 INFO L87 Difference]: Start difference. First operand 1486 states and 5896 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:34,741 INFO L93 Difference]: Finished difference Result 3122 states and 11610 transitions. [2021-06-05 03:39:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:34,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:34,747 INFO L225 Difference]: With dead ends: 3122 [2021-06-05 03:39:34,747 INFO L226 Difference]: Without dead ends: 2923 [2021-06-05 03:39:34,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-06-05 03:39:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1462. [2021-06-05 03:39:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.975359342915811) internal successors, (5808), 1461 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5808 transitions. [2021-06-05 03:39:34,788 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5808 transitions. Word has length 25 [2021-06-05 03:39:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:34,788 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5808 transitions. [2021-06-05 03:39:34,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5808 transitions. [2021-06-05 03:39:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:34,790 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:34,790 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:34,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 03:39:34,790 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1629154269, now seen corresponding path program 221 times [2021-06-05 03:39:34,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:34,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281389383] [2021-06-05 03:39:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:34,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:34,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281389383] [2021-06-05 03:39:34,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281389383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:34,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:34,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:34,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874211530] [2021-06-05 03:39:34,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:34,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:34,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:34,873 INFO L87 Difference]: Start difference. First operand 1462 states and 5808 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:34,955 INFO L93 Difference]: Finished difference Result 3132 states and 11657 transitions. [2021-06-05 03:39:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:34,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:34,961 INFO L225 Difference]: With dead ends: 3132 [2021-06-05 03:39:34,961 INFO L226 Difference]: Without dead ends: 2945 [2021-06-05 03:39:34,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-06-05 03:39:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1486. [2021-06-05 03:39:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.962289562289562) internal successors, (5884), 1485 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5884 transitions. [2021-06-05 03:39:35,002 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5884 transitions. Word has length 25 [2021-06-05 03:39:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:35,002 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5884 transitions. [2021-06-05 03:39:35,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5884 transitions. [2021-06-05 03:39:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:35,004 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:35,004 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:35,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 03:39:35,005 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:35,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1422346303, now seen corresponding path program 222 times [2021-06-05 03:39:35,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:35,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639666348] [2021-06-05 03:39:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:35,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:35,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639666348] [2021-06-05 03:39:35,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639666348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:35,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:35,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:35,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296174377] [2021-06-05 03:39:35,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:35,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:35,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:35,083 INFO L87 Difference]: Start difference. First operand 1486 states and 5884 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:35,149 INFO L93 Difference]: Finished difference Result 3120 states and 11593 transitions. [2021-06-05 03:39:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:35,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:35,168 INFO L225 Difference]: With dead ends: 3120 [2021-06-05 03:39:35,168 INFO L226 Difference]: Without dead ends: 2909 [2021-06-05 03:39:35,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2021-06-05 03:39:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1450. [2021-06-05 03:39:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9820565907522427) internal successors, (5770), 1449 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5770 transitions. [2021-06-05 03:39:35,218 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5770 transitions. Word has length 25 [2021-06-05 03:39:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:35,219 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5770 transitions. [2021-06-05 03:39:35,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5770 transitions. [2021-06-05 03:39:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:35,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:35,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:35,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 03:39:35,221 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 799531391, now seen corresponding path program 223 times [2021-06-05 03:39:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:35,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339041034] [2021-06-05 03:39:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:35,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:35,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339041034] [2021-06-05 03:39:35,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339041034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:35,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:35,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:35,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131463170] [2021-06-05 03:39:35,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:35,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:35,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:35,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:35,299 INFO L87 Difference]: Start difference. First operand 1450 states and 5770 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:35,366 INFO L93 Difference]: Finished difference Result 3250 states and 12076 transitions. [2021-06-05 03:39:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:35,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:35,372 INFO L225 Difference]: With dead ends: 3250 [2021-06-05 03:39:35,372 INFO L226 Difference]: Without dead ends: 3061 [2021-06-05 03:39:35,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2021-06-05 03:39:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1519. [2021-06-05 03:39:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 3.963109354413702) internal successors, (6016), 1518 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6016 transitions. [2021-06-05 03:39:35,416 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6016 transitions. Word has length 25 [2021-06-05 03:39:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:35,416 INFO L482 AbstractCegarLoop]: Abstraction has 1519 states and 6016 transitions. [2021-06-05 03:39:35,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6016 transitions. [2021-06-05 03:39:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:35,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:35,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:35,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 03:39:35,418 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:35,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:35,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1243805603, now seen corresponding path program 224 times [2021-06-05 03:39:35,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:35,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327224720] [2021-06-05 03:39:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:35,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:35,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327224720] [2021-06-05 03:39:35,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327224720] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:35,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:35,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:35,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697375448] [2021-06-05 03:39:35,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:35,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:35,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:35,496 INFO L87 Difference]: Start difference. First operand 1519 states and 6016 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:35,559 INFO L93 Difference]: Finished difference Result 3248 states and 12041 transitions. [2021-06-05 03:39:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:35,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:35,565 INFO L225 Difference]: With dead ends: 3248 [2021-06-05 03:39:35,565 INFO L226 Difference]: Without dead ends: 3031 [2021-06-05 03:39:35,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-06-05 03:39:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1489. [2021-06-05 03:39:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 3.9704301075268815) internal successors, (5908), 1488 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5908 transitions. [2021-06-05 03:39:35,607 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5908 transitions. Word has length 25 [2021-06-05 03:39:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:35,607 INFO L482 AbstractCegarLoop]: Abstraction has 1489 states and 5908 transitions. [2021-06-05 03:39:35,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5908 transitions. [2021-06-05 03:39:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:35,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:35,609 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:35,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 03:39:35,609 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1918329343, now seen corresponding path program 225 times [2021-06-05 03:39:35,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:35,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822068651] [2021-06-05 03:39:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:35,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:35,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822068651] [2021-06-05 03:39:35,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822068651] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:35,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:35,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:35,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262706762] [2021-06-05 03:39:35,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:35,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:35,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:35,689 INFO L87 Difference]: Start difference. First operand 1489 states and 5908 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:35,762 INFO L93 Difference]: Finished difference Result 3318 states and 12295 transitions. [2021-06-05 03:39:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:35,768 INFO L225 Difference]: With dead ends: 3318 [2021-06-05 03:39:35,768 INFO L226 Difference]: Without dead ends: 3129 [2021-06-05 03:39:35,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:35,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-06-05 03:39:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1552. [2021-06-05 03:39:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 3.9426176660219214) internal successors, (6115), 1551 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 6115 transitions. [2021-06-05 03:39:35,811 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 6115 transitions. Word has length 25 [2021-06-05 03:39:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:35,812 INFO L482 AbstractCegarLoop]: Abstraction has 1552 states and 6115 transitions. [2021-06-05 03:39:35,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 6115 transitions. [2021-06-05 03:39:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:35,814 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:35,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:35,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 03:39:35,814 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:35,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:35,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1362541055, now seen corresponding path program 226 times [2021-06-05 03:39:35,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:35,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622756895] [2021-06-05 03:39:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:35,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:35,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622756895] [2021-06-05 03:39:35,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622756895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:35,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:35,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:35,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414883220] [2021-06-05 03:39:35,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:35,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:35,893 INFO L87 Difference]: Start difference. First operand 1552 states and 6115 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:35,947 INFO L93 Difference]: Finished difference Result 3351 states and 12378 transitions. [2021-06-05 03:39:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:35,953 INFO L225 Difference]: With dead ends: 3351 [2021-06-05 03:39:35,953 INFO L226 Difference]: Without dead ends: 3066 [2021-06-05 03:39:35,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-06-05 03:39:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 1489. [2021-06-05 03:39:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 3.9495967741935485) internal successors, (5877), 1488 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5877 transitions. [2021-06-05 03:39:35,994 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5877 transitions. Word has length 25 [2021-06-05 03:39:35,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:35,994 INFO L482 AbstractCegarLoop]: Abstraction has 1489 states and 5877 transitions. [2021-06-05 03:39:35,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5877 transitions. [2021-06-05 03:39:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:35,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:35,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:35,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 03:39:35,996 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:35,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1394290339, now seen corresponding path program 227 times [2021-06-05 03:39:35,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:35,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733849137] [2021-06-05 03:39:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:36,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:36,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733849137] [2021-06-05 03:39:36,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733849137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:36,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:36,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:36,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20766195] [2021-06-05 03:39:36,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:36,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:36,076 INFO L87 Difference]: Start difference. First operand 1489 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:36,138 INFO L93 Difference]: Finished difference Result 3297 states and 12203 transitions. [2021-06-05 03:39:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:36,145 INFO L225 Difference]: With dead ends: 3297 [2021-06-05 03:39:36,145 INFO L226 Difference]: Without dead ends: 3110 [2021-06-05 03:39:36,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:36,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-06-05 03:39:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 1535. [2021-06-05 03:39:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.9335071707953064) internal successors, (6034), 1534 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6034 transitions. [2021-06-05 03:39:36,187 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6034 transitions. Word has length 25 [2021-06-05 03:39:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:36,187 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6034 transitions. [2021-06-05 03:39:36,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6034 transitions. [2021-06-05 03:39:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:36,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:36,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:36,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 03:39:36,189 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash 543287359, now seen corresponding path program 228 times [2021-06-05 03:39:36,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:36,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250415575] [2021-06-05 03:39:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:36,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:36,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250415575] [2021-06-05 03:39:36,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250415575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:36,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:36,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:36,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964867619] [2021-06-05 03:39:36,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:36,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:36,278 INFO L87 Difference]: Start difference. First operand 1535 states and 6034 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:36,332 INFO L93 Difference]: Finished difference Result 3332 states and 12292 transitions. [2021-06-05 03:39:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:36,337 INFO L225 Difference]: With dead ends: 3332 [2021-06-05 03:39:36,338 INFO L226 Difference]: Without dead ends: 3025 [2021-06-05 03:39:36,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-06-05 03:39:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1450. [2021-06-05 03:39:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9696342305037957) internal successors, (5752), 1449 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5752 transitions. [2021-06-05 03:39:36,378 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5752 transitions. Word has length 25 [2021-06-05 03:39:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:36,378 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5752 transitions. [2021-06-05 03:39:36,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5752 transitions. [2021-06-05 03:39:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:36,380 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:36,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:36,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 03:39:36,380 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1336450467, now seen corresponding path program 229 times [2021-06-05 03:39:36,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:36,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270094382] [2021-06-05 03:39:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:36,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:36,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270094382] [2021-06-05 03:39:36,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270094382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:36,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:36,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:36,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596506511] [2021-06-05 03:39:36,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:36,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:36,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:36,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:36,475 INFO L87 Difference]: Start difference. First operand 1450 states and 5752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:36,541 INFO L93 Difference]: Finished difference Result 3197 states and 11876 transitions. [2021-06-05 03:39:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:36,547 INFO L225 Difference]: With dead ends: 3197 [2021-06-05 03:39:36,547 INFO L226 Difference]: Without dead ends: 3008 [2021-06-05 03:39:36,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:36,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-06-05 03:39:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1502. [2021-06-05 03:39:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9626915389740174) internal successors, (5948), 1501 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2021-06-05 03:39:36,615 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2021-06-05 03:39:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:36,615 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2021-06-05 03:39:36,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2021-06-05 03:39:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:36,617 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:36,617 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:36,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 03:39:36,617 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash -780662179, now seen corresponding path program 230 times [2021-06-05 03:39:36,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:36,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285980145] [2021-06-05 03:39:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:36,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:36,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285980145] [2021-06-05 03:39:36,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285980145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:36,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:36,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:36,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925584103] [2021-06-05 03:39:36,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:36,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:36,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:36,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:36,714 INFO L87 Difference]: Start difference. First operand 1502 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:36,778 INFO L93 Difference]: Finished difference Result 3183 states and 11807 transitions. [2021-06-05 03:39:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:36,784 INFO L225 Difference]: With dead ends: 3183 [2021-06-05 03:39:36,784 INFO L226 Difference]: Without dead ends: 2984 [2021-06-05 03:39:36,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-06-05 03:39:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1478. [2021-06-05 03:39:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.967501692620176) internal successors, (5860), 1477 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5860 transitions. [2021-06-05 03:39:36,825 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5860 transitions. Word has length 25 [2021-06-05 03:39:36,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:36,825 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5860 transitions. [2021-06-05 03:39:36,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5860 transitions. [2021-06-05 03:39:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:36,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:36,827 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:36,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 03:39:36,827 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:36,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1953973825, now seen corresponding path program 231 times [2021-06-05 03:39:36,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:36,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441001491] [2021-06-05 03:39:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:36,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:36,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441001491] [2021-06-05 03:39:36,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441001491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:36,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:36,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:36,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183296083] [2021-06-05 03:39:36,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:36,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:36,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:36,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:36,912 INFO L87 Difference]: Start difference. First operand 1478 states and 5860 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:36,979 INFO L93 Difference]: Finished difference Result 3220 states and 11923 transitions. [2021-06-05 03:39:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:36,985 INFO L225 Difference]: With dead ends: 3220 [2021-06-05 03:39:36,985 INFO L226 Difference]: Without dead ends: 3031 [2021-06-05 03:39:36,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-06-05 03:39:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1541. [2021-06-05 03:39:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 3.93961038961039) internal successors, (6067), 1540 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 6067 transitions. [2021-06-05 03:39:37,028 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 6067 transitions. Word has length 25 [2021-06-05 03:39:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:37,028 INFO L482 AbstractCegarLoop]: Abstraction has 1541 states and 6067 transitions. [2021-06-05 03:39:37,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 6067 transitions. [2021-06-05 03:39:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:37,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:37,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:37,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 03:39:37,030 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:37,030 INFO L82 PathProgramCache]: Analyzing trace with hash -670471587, now seen corresponding path program 232 times [2021-06-05 03:39:37,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:37,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860770920] [2021-06-05 03:39:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:37,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:37,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860770920] [2021-06-05 03:39:37,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860770920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:37,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:37,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:37,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571873710] [2021-06-05 03:39:37,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:37,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:37,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:37,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:37,116 INFO L87 Difference]: Start difference. First operand 1541 states and 6067 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:37,172 INFO L93 Difference]: Finished difference Result 3253 states and 12006 transitions. [2021-06-05 03:39:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:37,177 INFO L225 Difference]: With dead ends: 3253 [2021-06-05 03:39:37,177 INFO L226 Difference]: Without dead ends: 2968 [2021-06-05 03:39:37,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-06-05 03:39:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1478. [2021-06-05 03:39:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.948544346648612) internal successors, (5832), 1477 states have internal predecessors, (5832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5832 transitions. [2021-06-05 03:39:37,218 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5832 transitions. Word has length 25 [2021-06-05 03:39:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:37,218 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5832 transitions. [2021-06-05 03:39:37,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5832 transitions. [2021-06-05 03:39:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:37,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:37,220 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:37,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 03:39:37,220 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:37,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1977705053, now seen corresponding path program 233 times [2021-06-05 03:39:37,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:37,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92225105] [2021-06-05 03:39:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:37,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:37,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92225105] [2021-06-05 03:39:37,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92225105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:37,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:37,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:37,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041713296] [2021-06-05 03:39:37,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:37,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:37,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:37,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:37,313 INFO L87 Difference]: Start difference. First operand 1478 states and 5832 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:37,376 INFO L93 Difference]: Finished difference Result 3169 states and 11731 transitions. [2021-06-05 03:39:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:37,382 INFO L225 Difference]: With dead ends: 3169 [2021-06-05 03:39:37,382 INFO L226 Difference]: Without dead ends: 2994 [2021-06-05 03:39:37,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-06-05 03:39:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1518. [2021-06-05 03:39:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.936717205009888) internal successors, (5972), 1517 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 5972 transitions. [2021-06-05 03:39:37,423 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 5972 transitions. Word has length 25 [2021-06-05 03:39:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:37,423 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 5972 transitions. [2021-06-05 03:39:37,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 5972 transitions. [2021-06-05 03:39:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:37,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:37,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:37,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 03:39:37,425 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2098910657, now seen corresponding path program 234 times [2021-06-05 03:39:37,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:37,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908743376] [2021-06-05 03:39:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:37,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:37,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908743376] [2021-06-05 03:39:37,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908743376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:37,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:37,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:37,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754835169] [2021-06-05 03:39:37,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:37,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:37,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:37,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:37,518 INFO L87 Difference]: Start difference. First operand 1518 states and 5972 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:37,574 INFO L93 Difference]: Finished difference Result 3121 states and 11531 transitions. [2021-06-05 03:39:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:37,580 INFO L225 Difference]: With dead ends: 3121 [2021-06-05 03:39:37,580 INFO L226 Difference]: Without dead ends: 2831 [2021-06-05 03:39:37,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-06-05 03:39:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1450. [2021-06-05 03:39:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9599723947550034) internal successors, (5738), 1449 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5738 transitions. [2021-06-05 03:39:37,620 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5738 transitions. Word has length 25 [2021-06-05 03:39:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:37,621 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5738 transitions. [2021-06-05 03:39:37,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5738 transitions. [2021-06-05 03:39:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:37,622 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:37,623 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:37,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 03:39:37,623 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:37,623 INFO L82 PathProgramCache]: Analyzing trace with hash -364053957, now seen corresponding path program 235 times [2021-06-05 03:39:37,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:37,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795973936] [2021-06-05 03:39:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:37,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:37,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795973936] [2021-06-05 03:39:37,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795973936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:37,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:37,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:37,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517050055] [2021-06-05 03:39:37,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:37,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:37,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:37,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:37,699 INFO L87 Difference]: Start difference. First operand 1450 states and 5738 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:37,764 INFO L93 Difference]: Finished difference Result 3166 states and 11768 transitions. [2021-06-05 03:39:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:37,770 INFO L225 Difference]: With dead ends: 3166 [2021-06-05 03:39:37,770 INFO L226 Difference]: Without dead ends: 2979 [2021-06-05 03:39:37,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2021-06-05 03:39:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1494. [2021-06-05 03:39:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.955793703951775) internal successors, (5906), 1493 states have internal predecessors, (5906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5906 transitions. [2021-06-05 03:39:37,811 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5906 transitions. Word has length 25 [2021-06-05 03:39:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:37,811 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5906 transitions. [2021-06-05 03:39:37,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5906 transitions. [2021-06-05 03:39:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:37,813 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:37,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:37,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 03:39:37,813 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:37,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:37,813 INFO L82 PathProgramCache]: Analyzing trace with hash -570861923, now seen corresponding path program 236 times [2021-06-05 03:39:37,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:37,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051770827] [2021-06-05 03:39:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:37,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:37,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051770827] [2021-06-05 03:39:37,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051770827] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:37,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:37,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:37,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164580714] [2021-06-05 03:39:37,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:37,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:37,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:37,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:37,888 INFO L87 Difference]: Start difference. First operand 1494 states and 5906 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:37,950 INFO L93 Difference]: Finished difference Result 3154 states and 11704 transitions. [2021-06-05 03:39:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:37,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:37,956 INFO L225 Difference]: With dead ends: 3154 [2021-06-05 03:39:37,956 INFO L226 Difference]: Without dead ends: 2955 [2021-06-05 03:39:37,956 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-05 03:39:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1470. [2021-06-05 03:39:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.960517358747447) internal successors, (5818), 1469 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5818 transitions. [2021-06-05 03:39:37,997 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5818 transitions. Word has length 25 [2021-06-05 03:39:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:37,997 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5818 transitions. [2021-06-05 03:39:37,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5818 transitions. [2021-06-05 03:39:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:37,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:37,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:37,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 03:39:37,999 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash -981577315, now seen corresponding path program 237 times [2021-06-05 03:39:38,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:38,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710319996] [2021-06-05 03:39:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:38,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:38,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710319996] [2021-06-05 03:39:38,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710319996] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:38,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:38,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:38,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923100771] [2021-06-05 03:39:38,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:38,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:38,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:38,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:38,079 INFO L87 Difference]: Start difference. First operand 1470 states and 5818 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:38,143 INFO L93 Difference]: Finished difference Result 3189 states and 11815 transitions. [2021-06-05 03:39:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:38,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:38,149 INFO L225 Difference]: With dead ends: 3189 [2021-06-05 03:39:38,149 INFO L226 Difference]: Without dead ends: 3002 [2021-06-05 03:39:38,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:38,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-06-05 03:39:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1516. [2021-06-05 03:39:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.943894389438944) internal successors, (5975), 1515 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5975 transitions. [2021-06-05 03:39:38,190 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5975 transitions. Word has length 25 [2021-06-05 03:39:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:38,191 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5975 transitions. [2021-06-05 03:39:38,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5975 transitions. [2021-06-05 03:39:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:38,193 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:38,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:38,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 03:39:38,193 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:38,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1499676387, now seen corresponding path program 238 times [2021-06-05 03:39:38,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:38,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687325097] [2021-06-05 03:39:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:38,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:38,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687325097] [2021-06-05 03:39:38,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687325097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:38,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:38,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:38,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562715820] [2021-06-05 03:39:38,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:38,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:38,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:38,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:38,275 INFO L87 Difference]: Start difference. First operand 1516 states and 5975 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:38,330 INFO L93 Difference]: Finished difference Result 3224 states and 11904 transitions. [2021-06-05 03:39:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:38,335 INFO L225 Difference]: With dead ends: 3224 [2021-06-05 03:39:38,335 INFO L226 Difference]: Without dead ends: 2956 [2021-06-05 03:39:38,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-06-05 03:39:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1470. [2021-06-05 03:39:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9469026548672566) internal successors, (5798), 1469 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5798 transitions. [2021-06-05 03:39:38,376 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5798 transitions. Word has length 25 [2021-06-05 03:39:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:38,376 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5798 transitions. [2021-06-05 03:39:38,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5798 transitions. [2021-06-05 03:39:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:38,378 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:38,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:38,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 03:39:38,379 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:38,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1720466687, now seen corresponding path program 239 times [2021-06-05 03:39:38,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:38,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591550011] [2021-06-05 03:39:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:38,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:38,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591550011] [2021-06-05 03:39:38,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591550011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:38,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:38,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:38,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992716718] [2021-06-05 03:39:38,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:38,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:38,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:38,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:38,465 INFO L87 Difference]: Start difference. First operand 1470 states and 5798 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:38,532 INFO L93 Difference]: Finished difference Result 3159 states and 11692 transitions. [2021-06-05 03:39:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:38,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:38,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:38,538 INFO L225 Difference]: With dead ends: 3159 [2021-06-05 03:39:38,539 INFO L226 Difference]: Without dead ends: 2984 [2021-06-05 03:39:38,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-06-05 03:39:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1510. [2021-06-05 03:39:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.9350563286944995) internal successors, (5938), 1509 states have internal predecessors, (5938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5938 transitions. [2021-06-05 03:39:38,579 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5938 transitions. Word has length 25 [2021-06-05 03:39:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:38,579 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 5938 transitions. [2021-06-05 03:39:38,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5938 transitions. [2021-06-05 03:39:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:38,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:38,581 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:38,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 03:39:38,581 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash -100568739, now seen corresponding path program 240 times [2021-06-05 03:39:38,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:38,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570591561] [2021-06-05 03:39:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:38,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:38,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570591561] [2021-06-05 03:39:38,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570591561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:38,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:38,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:38,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422577249] [2021-06-05 03:39:38,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:38,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:38,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:38,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:38,669 INFO L87 Difference]: Start difference. First operand 1510 states and 5938 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:38,723 INFO L93 Difference]: Finished difference Result 3111 states and 11492 transitions. [2021-06-05 03:39:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:38,728 INFO L225 Difference]: With dead ends: 3111 [2021-06-05 03:39:38,728 INFO L226 Difference]: Without dead ends: 2803 [2021-06-05 03:39:38,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-06-05 03:39:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1424. [2021-06-05 03:39:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9880534082923402) internal successors, (5675), 1423 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5675 transitions. [2021-06-05 03:39:38,767 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5675 transitions. Word has length 25 [2021-06-05 03:39:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:38,767 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5675 transitions. [2021-06-05 03:39:38,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5675 transitions. [2021-06-05 03:39:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:38,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:38,769 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:38,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 03:39:38,769 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash -272332129, now seen corresponding path program 241 times [2021-06-05 03:39:38,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:38,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405503419] [2021-06-05 03:39:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:38,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:38,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405503419] [2021-06-05 03:39:38,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405503419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:38,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:38,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:38,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643396810] [2021-06-05 03:39:38,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:38,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:38,861 INFO L87 Difference]: Start difference. First operand 1424 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:38,919 INFO L93 Difference]: Finished difference Result 3076 states and 11383 transitions. [2021-06-05 03:39:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:38,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:38,924 INFO L225 Difference]: With dead ends: 3076 [2021-06-05 03:39:38,924 INFO L226 Difference]: Without dead ends: 2917 [2021-06-05 03:39:38,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-06-05 03:39:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1480. [2021-06-05 03:39:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.980392156862745) internal successors, (5887), 1479 states have internal predecessors, (5887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5887 transitions. [2021-06-05 03:39:38,977 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5887 transitions. Word has length 25 [2021-06-05 03:39:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:38,977 INFO L482 AbstractCegarLoop]: Abstraction has 1480 states and 5887 transitions. [2021-06-05 03:39:38,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5887 transitions. [2021-06-05 03:39:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:38,979 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:38,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:38,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 03:39:38,979 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:38,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1280630113, now seen corresponding path program 242 times [2021-06-05 03:39:38,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:38,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454383752] [2021-06-05 03:39:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:39,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:39,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454383752] [2021-06-05 03:39:39,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454383752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:39,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:39,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:39,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218634820] [2021-06-05 03:39:39,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:39,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:39,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:39,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:39,069 INFO L87 Difference]: Start difference. First operand 1480 states and 5887 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:39,143 INFO L93 Difference]: Finished difference Result 3139 states and 11590 transitions. [2021-06-05 03:39:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:39,150 INFO L225 Difference]: With dead ends: 3139 [2021-06-05 03:39:39,151 INFO L226 Difference]: Without dead ends: 2885 [2021-06-05 03:39:39,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2021-06-05 03:39:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1448. [2021-06-05 03:39:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.979958534899793) internal successors, (5759), 1447 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5759 transitions. [2021-06-05 03:39:39,206 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5759 transitions. Word has length 25 [2021-06-05 03:39:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:39,206 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5759 transitions. [2021-06-05 03:39:39,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5759 transitions. [2021-06-05 03:39:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:39,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:39,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:39,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 03:39:39,209 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash -233717445, now seen corresponding path program 243 times [2021-06-05 03:39:39,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:39,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933670556] [2021-06-05 03:39:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:39,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:39,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933670556] [2021-06-05 03:39:39,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933670556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:39,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:39,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:39,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728589554] [2021-06-05 03:39:39,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:39,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:39,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:39,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:39,320 INFO L87 Difference]: Start difference. First operand 1448 states and 5759 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:39,399 INFO L93 Difference]: Finished difference Result 3027 states and 11189 transitions. [2021-06-05 03:39:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:39,406 INFO L225 Difference]: With dead ends: 3027 [2021-06-05 03:39:39,406 INFO L226 Difference]: Without dead ends: 2868 [2021-06-05 03:39:39,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2021-06-05 03:39:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1464. [2021-06-05 03:39:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.969241285030759) internal successors, (5807), 1463 states have internal predecessors, (5807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5807 transitions. [2021-06-05 03:39:39,463 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5807 transitions. Word has length 25 [2021-06-05 03:39:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:39,463 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5807 transitions. [2021-06-05 03:39:39,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5807 transitions. [2021-06-05 03:39:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:39,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:39,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:39,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 03:39:39,466 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:39,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1823652195, now seen corresponding path program 244 times [2021-06-05 03:39:39,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:39,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571229190] [2021-06-05 03:39:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:39,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:39,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571229190] [2021-06-05 03:39:39,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571229190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:39,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:39,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:39,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188175634] [2021-06-05 03:39:39,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:39,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:39,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:39,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:39,575 INFO L87 Difference]: Start difference. First operand 1464 states and 5807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:39,650 INFO L93 Difference]: Finished difference Result 3057 states and 11282 transitions. [2021-06-05 03:39:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:39,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:39,656 INFO L225 Difference]: With dead ends: 3057 [2021-06-05 03:39:39,656 INFO L226 Difference]: Without dead ends: 2852 [2021-06-05 03:39:39,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-06-05 03:39:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1448. [2021-06-05 03:39:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9744298548721493) internal successors, (5751), 1447 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5751 transitions. [2021-06-05 03:39:39,696 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5751 transitions. Word has length 25 [2021-06-05 03:39:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:39,696 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5751 transitions. [2021-06-05 03:39:39,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5751 transitions. [2021-06-05 03:39:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:39,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:39,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:39,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 03:39:39,698 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:39,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1833151615, now seen corresponding path program 245 times [2021-06-05 03:39:39,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:39,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88743065] [2021-06-05 03:39:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:39,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:39,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88743065] [2021-06-05 03:39:39,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88743065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:39,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:39,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:39,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555902759] [2021-06-05 03:39:39,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:39,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:39,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:39,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:39,782 INFO L87 Difference]: Start difference. First operand 1448 states and 5751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:39,855 INFO L93 Difference]: Finished difference Result 3167 states and 11687 transitions. [2021-06-05 03:39:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:39,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:39,861 INFO L225 Difference]: With dead ends: 3167 [2021-06-05 03:39:39,861 INFO L226 Difference]: Without dead ends: 2978 [2021-06-05 03:39:39,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2021-06-05 03:39:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1511. [2021-06-05 03:39:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9456953642384107) internal successors, (5958), 1510 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5958 transitions. [2021-06-05 03:39:39,901 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5958 transitions. Word has length 25 [2021-06-05 03:39:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:39,901 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5958 transitions. [2021-06-05 03:39:39,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5958 transitions. [2021-06-05 03:39:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:39,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:39,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:39,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 03:39:39,903 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:39,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2131204573, now seen corresponding path program 246 times [2021-06-05 03:39:39,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:39,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392308433] [2021-06-05 03:39:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:39,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:39,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392308433] [2021-06-05 03:39:39,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392308433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:39,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:39,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:39,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771272313] [2021-06-05 03:39:39,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:39,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:39,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:39,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:39,987 INFO L87 Difference]: Start difference. First operand 1511 states and 5958 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:40,048 INFO L93 Difference]: Finished difference Result 3200 states and 11770 transitions. [2021-06-05 03:39:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:40,053 INFO L225 Difference]: With dead ends: 3200 [2021-06-05 03:39:40,053 INFO L226 Difference]: Without dead ends: 2891 [2021-06-05 03:39:40,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-06-05 03:39:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1424. [2021-06-05 03:39:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9796205200281096) internal successors, (5663), 1423 states have internal predecessors, (5663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5663 transitions. [2021-06-05 03:39:40,092 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5663 transitions. Word has length 25 [2021-06-05 03:39:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:40,092 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5663 transitions. [2021-06-05 03:39:40,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5663 transitions. [2021-06-05 03:39:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:40,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:40,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:40,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 03:39:40,094 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1026847549, now seen corresponding path program 247 times [2021-06-05 03:39:40,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:40,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87080476] [2021-06-05 03:39:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:40,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:40,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87080476] [2021-06-05 03:39:40,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87080476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:40,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:40,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:40,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967481629] [2021-06-05 03:39:40,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:40,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:40,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:40,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:40,185 INFO L87 Difference]: Start difference. First operand 1424 states and 5663 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:40,240 INFO L93 Difference]: Finished difference Result 3043 states and 11268 transitions. [2021-06-05 03:39:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:40,245 INFO L225 Difference]: With dead ends: 3043 [2021-06-05 03:39:40,245 INFO L226 Difference]: Without dead ends: 2884 [2021-06-05 03:39:40,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-06-05 03:39:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1472. [2021-06-05 03:39:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9748470428280083) internal successors, (5847), 1471 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2021-06-05 03:39:40,285 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2021-06-05 03:39:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:40,285 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2021-06-05 03:39:40,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2021-06-05 03:39:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:40,287 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:40,287 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:40,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 03:39:40,287 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:40,287 INFO L82 PathProgramCache]: Analyzing trace with hash 18549565, now seen corresponding path program 248 times [2021-06-05 03:39:40,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:40,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032972360] [2021-06-05 03:39:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:40,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:40,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032972360] [2021-06-05 03:39:40,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032972360] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:40,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:40,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:40,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35934775] [2021-06-05 03:39:40,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:40,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:40,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:40,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:40,379 INFO L87 Difference]: Start difference. First operand 1472 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:40,440 INFO L93 Difference]: Finished difference Result 3106 states and 11475 transitions. [2021-06-05 03:39:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:40,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:40,445 INFO L225 Difference]: With dead ends: 3106 [2021-06-05 03:39:40,445 INFO L226 Difference]: Without dead ends: 2852 [2021-06-05 03:39:40,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-06-05 03:39:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1440. [2021-06-05 03:39:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.974287699791522) internal successors, (5719), 1439 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5719 transitions. [2021-06-05 03:39:40,485 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5719 transitions. Word has length 25 [2021-06-05 03:39:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:40,485 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5719 transitions. [2021-06-05 03:39:40,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5719 transitions. [2021-06-05 03:39:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:40,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:40,487 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:40,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 03:39:40,487 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1234329889, now seen corresponding path program 249 times [2021-06-05 03:39:40,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:40,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946507563] [2021-06-05 03:39:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:40,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:40,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946507563] [2021-06-05 03:39:40,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946507563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:40,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:40,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:40,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097838486] [2021-06-05 03:39:40,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:40,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:40,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:40,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:40,570 INFO L87 Difference]: Start difference. First operand 1440 states and 5719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:40,630 INFO L93 Difference]: Finished difference Result 2988 states and 11057 transitions. [2021-06-05 03:39:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:40,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:40,635 INFO L225 Difference]: With dead ends: 2988 [2021-06-05 03:39:40,636 INFO L226 Difference]: Without dead ends: 2829 [2021-06-05 03:39:40,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2021-06-05 03:39:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2021-06-05 03:39:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.963573883161512) internal successors, (5767), 1455 states have internal predecessors, (5767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5767 transitions. [2021-06-05 03:39:40,675 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5767 transitions. Word has length 25 [2021-06-05 03:39:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:40,675 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5767 transitions. [2021-06-05 03:39:40,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5767 transitions. [2021-06-05 03:39:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:40,677 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:40,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:40,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 03:39:40,678 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:40,678 INFO L82 PathProgramCache]: Analyzing trace with hash 446166751, now seen corresponding path program 250 times [2021-06-05 03:39:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:40,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953431833] [2021-06-05 03:39:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:40,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:40,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953431833] [2021-06-05 03:39:40,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953431833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:40,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:40,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:40,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459077533] [2021-06-05 03:39:40,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:40,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:40,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:40,762 INFO L87 Difference]: Start difference. First operand 1456 states and 5767 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:40,835 INFO L93 Difference]: Finished difference Result 3012 states and 11133 transitions. [2021-06-05 03:39:40,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:40,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:40,841 INFO L225 Difference]: With dead ends: 3012 [2021-06-05 03:39:40,841 INFO L226 Difference]: Without dead ends: 2813 [2021-06-05 03:39:40,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2021-06-05 03:39:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1440. [2021-06-05 03:39:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.968728283530229) internal successors, (5711), 1439 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5711 transitions. [2021-06-05 03:39:40,880 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5711 transitions. Word has length 25 [2021-06-05 03:39:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:40,880 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5711 transitions. [2021-06-05 03:39:40,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5711 transitions. [2021-06-05 03:39:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:40,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:40,883 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:40,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 03:39:40,883 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2134413023, now seen corresponding path program 251 times [2021-06-05 03:39:40,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:40,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750032138] [2021-06-05 03:39:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:41,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:41,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750032138] [2021-06-05 03:39:41,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750032138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:41,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:41,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:41,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156781579] [2021-06-05 03:39:41,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:41,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:41,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:41,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:41,003 INFO L87 Difference]: Start difference. First operand 1440 states and 5711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:41,078 INFO L93 Difference]: Finished difference Result 3103 states and 11480 transitions. [2021-06-05 03:39:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:41,085 INFO L225 Difference]: With dead ends: 3103 [2021-06-05 03:39:41,085 INFO L226 Difference]: Without dead ends: 2920 [2021-06-05 03:39:41,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-06-05 03:39:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1484. [2021-06-05 03:39:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9534726904922453) internal successors, (5863), 1483 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5863 transitions. [2021-06-05 03:39:41,129 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5863 transitions. Word has length 25 [2021-06-05 03:39:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:41,129 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5863 transitions. [2021-06-05 03:39:41,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5863 transitions. [2021-06-05 03:39:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:41,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:41,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:41,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 03:39:41,132 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1130081085, now seen corresponding path program 252 times [2021-06-05 03:39:41,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:41,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507931301] [2021-06-05 03:39:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:41,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:41,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507931301] [2021-06-05 03:39:41,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507931301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:41,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:41,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:41,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294863647] [2021-06-05 03:39:41,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:41,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:41,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:41,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:41,240 INFO L87 Difference]: Start difference. First operand 1484 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:41,312 INFO L93 Difference]: Finished difference Result 3142 states and 11583 transitions. [2021-06-05 03:39:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:41,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:41,317 INFO L225 Difference]: With dead ends: 3142 [2021-06-05 03:39:41,318 INFO L226 Difference]: Without dead ends: 2860 [2021-06-05 03:39:41,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-06-05 03:39:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1424. [2021-06-05 03:39:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9739985945186227) internal successors, (5655), 1423 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5655 transitions. [2021-06-05 03:39:41,357 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5655 transitions. Word has length 25 [2021-06-05 03:39:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:41,357 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5655 transitions. [2021-06-05 03:39:41,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5655 transitions. [2021-06-05 03:39:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:41,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:41,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:41,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 03:39:41,360 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1721451033, now seen corresponding path program 253 times [2021-06-05 03:39:41,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:41,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016339007] [2021-06-05 03:39:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:41,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:41,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016339007] [2021-06-05 03:39:41,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016339007] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:41,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:41,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:41,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302372517] [2021-06-05 03:39:41,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:41,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:41,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:41,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:41,460 INFO L87 Difference]: Start difference. First operand 1424 states and 5655 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:41,521 INFO L93 Difference]: Finished difference Result 2921 states and 10804 transitions. [2021-06-05 03:39:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:41,526 INFO L225 Difference]: With dead ends: 2921 [2021-06-05 03:39:41,526 INFO L226 Difference]: Without dead ends: 2762 [2021-06-05 03:39:41,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-06-05 03:39:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1448. [2021-06-05 03:39:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9661368348306842) internal successors, (5739), 1447 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5739 transitions. [2021-06-05 03:39:41,576 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5739 transitions. Word has length 25 [2021-06-05 03:39:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:41,576 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5739 transitions. [2021-06-05 03:39:41,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5739 transitions. [2021-06-05 03:39:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:41,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:41,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:41,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 03:39:41,578 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:41,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash 131516283, now seen corresponding path program 254 times [2021-06-05 03:39:41,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:41,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964380604] [2021-06-05 03:39:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:41,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:41,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964380604] [2021-06-05 03:39:41,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964380604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:41,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:41,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:41,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638502612] [2021-06-05 03:39:41,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:41,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:41,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:41,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:41,688 INFO L87 Difference]: Start difference. First operand 1448 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:41,759 INFO L93 Difference]: Finished difference Result 2951 states and 10897 transitions. [2021-06-05 03:39:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:41,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:41,764 INFO L225 Difference]: With dead ends: 2951 [2021-06-05 03:39:41,764 INFO L226 Difference]: Without dead ends: 2746 [2021-06-05 03:39:41,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-06-05 03:39:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1432. [2021-06-05 03:39:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.971348707197764) internal successors, (5683), 1431 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5683 transitions. [2021-06-05 03:39:41,802 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5683 transitions. Word has length 25 [2021-06-05 03:39:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:41,802 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5683 transitions. [2021-06-05 03:39:41,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5683 transitions. [2021-06-05 03:39:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:41,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:41,804 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:41,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 03:39:41,804 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:41,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1514643067, now seen corresponding path program 255 times [2021-06-05 03:39:41,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:41,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647891573] [2021-06-05 03:39:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:41,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:41,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647891573] [2021-06-05 03:39:41,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647891573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:41,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:41,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:41,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192736501] [2021-06-05 03:39:41,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:41,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:41,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:41,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:41,883 INFO L87 Difference]: Start difference. First operand 1432 states and 5683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:41,935 INFO L93 Difference]: Finished difference Result 2915 states and 10779 transitions. [2021-06-05 03:39:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:41,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:41,941 INFO L225 Difference]: With dead ends: 2915 [2021-06-05 03:39:41,941 INFO L226 Difference]: Without dead ends: 2756 [2021-06-05 03:39:41,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-06-05 03:39:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1448. [2021-06-05 03:39:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9606081548030407) internal successors, (5731), 1447 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5731 transitions. [2021-06-05 03:39:41,980 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5731 transitions. Word has length 25 [2021-06-05 03:39:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:41,980 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5731 transitions. [2021-06-05 03:39:41,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5731 transitions. [2021-06-05 03:39:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:41,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:41,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:41,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 03:39:41,982 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:41,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1099827589, now seen corresponding path program 256 times [2021-06-05 03:39:41,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:41,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910961333] [2021-06-05 03:39:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:42,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:42,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910961333] [2021-06-05 03:39:42,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910961333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:42,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:42,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:42,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061368520] [2021-06-05 03:39:42,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:42,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:42,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:42,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:42,059 INFO L87 Difference]: Start difference. First operand 1448 states and 5731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:42,122 INFO L93 Difference]: Finished difference Result 2939 states and 10855 transitions. [2021-06-05 03:39:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:42,128 INFO L225 Difference]: With dead ends: 2939 [2021-06-05 03:39:42,128 INFO L226 Difference]: Without dead ends: 2740 [2021-06-05 03:39:42,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-06-05 03:39:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1432. [2021-06-05 03:39:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.96575821104123) internal successors, (5675), 1431 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5675 transitions. [2021-06-05 03:39:42,166 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5675 transitions. Word has length 25 [2021-06-05 03:39:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:42,166 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5675 transitions. [2021-06-05 03:39:42,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5675 transitions. [2021-06-05 03:39:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:42,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:42,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:42,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 03:39:42,168 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:42,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1363162275, now seen corresponding path program 257 times [2021-06-05 03:39:42,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:42,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885630412] [2021-06-05 03:39:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:42,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:42,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885630412] [2021-06-05 03:39:42,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885630412] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:42,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:42,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:42,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125148525] [2021-06-05 03:39:42,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:42,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:42,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:42,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:42,261 INFO L87 Difference]: Start difference. First operand 1432 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:42,327 INFO L93 Difference]: Finished difference Result 2987 states and 11041 transitions. [2021-06-05 03:39:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:42,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:42,333 INFO L225 Difference]: With dead ends: 2987 [2021-06-05 03:39:42,333 INFO L226 Difference]: Without dead ends: 2798 [2021-06-05 03:39:42,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-06-05 03:39:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1460. [2021-06-05 03:39:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.949965729952022) internal successors, (5763), 1459 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5763 transitions. [2021-06-05 03:39:42,374 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5763 transitions. Word has length 25 [2021-06-05 03:39:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:42,374 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5763 transitions. [2021-06-05 03:39:42,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5763 transitions. [2021-06-05 03:39:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:42,376 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:42,376 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:42,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 03:39:42,376 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:42,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1539660475, now seen corresponding path program 258 times [2021-06-05 03:39:42,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:42,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222860713] [2021-06-05 03:39:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:42,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:42,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222860713] [2021-06-05 03:39:42,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222860713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:42,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:42,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:42,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964074198] [2021-06-05 03:39:42,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:42,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:42,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:42,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:42,452 INFO L87 Difference]: Start difference. First operand 1460 states and 5763 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:42,518 INFO L93 Difference]: Finished difference Result 2981 states and 10996 transitions. [2021-06-05 03:39:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:42,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:42,524 INFO L225 Difference]: With dead ends: 2981 [2021-06-05 03:39:42,524 INFO L226 Difference]: Without dead ends: 2762 [2021-06-05 03:39:42,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-06-05 03:39:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1424. [2021-06-05 03:39:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.971187631763879) internal successors, (5651), 1423 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5651 transitions. [2021-06-05 03:39:42,566 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5651 transitions. Word has length 25 [2021-06-05 03:39:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:42,566 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5651 transitions. [2021-06-05 03:39:42,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5651 transitions. [2021-06-05 03:39:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:42,568 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:42,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:42,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 03:39:42,568 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -457948993, now seen corresponding path program 259 times [2021-06-05 03:39:42,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:42,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412302258] [2021-06-05 03:39:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:42,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:42,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412302258] [2021-06-05 03:39:42,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412302258] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:42,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:42,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:42,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292126366] [2021-06-05 03:39:42,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:42,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:42,644 INFO L87 Difference]: Start difference. First operand 1424 states and 5651 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:42,711 INFO L93 Difference]: Finished difference Result 3147 states and 11659 transitions. [2021-06-05 03:39:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:42,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:42,717 INFO L225 Difference]: With dead ends: 3147 [2021-06-05 03:39:42,717 INFO L226 Difference]: Without dead ends: 2958 [2021-06-05 03:39:42,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2021-06-05 03:39:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1482. [2021-06-05 03:39:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.962187711006077) internal successors, (5868), 1481 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5868 transitions. [2021-06-05 03:39:42,761 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5868 transitions. Word has length 25 [2021-06-05 03:39:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:42,761 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5868 transitions. [2021-06-05 03:39:42,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5868 transitions. [2021-06-05 03:39:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:42,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:42,764 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:42,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 03:39:42,764 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:42,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1850093539, now seen corresponding path program 260 times [2021-06-05 03:39:42,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:42,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538216627] [2021-06-05 03:39:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:42,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:42,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538216627] [2021-06-05 03:39:42,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538216627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:42,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:42,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:42,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114203865] [2021-06-05 03:39:42,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:42,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:42,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:42,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:42,841 INFO L87 Difference]: Start difference. First operand 1482 states and 5868 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:42,903 INFO L93 Difference]: Finished difference Result 3141 states and 11614 transitions. [2021-06-05 03:39:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:42,909 INFO L225 Difference]: With dead ends: 3141 [2021-06-05 03:39:42,909 INFO L226 Difference]: Without dead ends: 2930 [2021-06-05 03:39:42,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-06-05 03:39:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1454. [2021-06-05 03:39:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.9683413626978665) internal successors, (5766), 1453 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5766 transitions. [2021-06-05 03:39:42,949 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5766 transitions. Word has length 25 [2021-06-05 03:39:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:42,949 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 5766 transitions. [2021-06-05 03:39:42,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5766 transitions. [2021-06-05 03:39:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:42,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:42,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:42,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 03:39:42,951 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:42,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:42,951 INFO L82 PathProgramCache]: Analyzing trace with hash 746700189, now seen corresponding path program 261 times [2021-06-05 03:39:42,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:42,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646372832] [2021-06-05 03:39:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:43,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:43,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646372832] [2021-06-05 03:39:43,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646372832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:43,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:43,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:43,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512461607] [2021-06-05 03:39:43,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:43,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:43,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:43,045 INFO L87 Difference]: Start difference. First operand 1454 states and 5766 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:43,106 INFO L93 Difference]: Finished difference Result 3221 states and 11898 transitions. [2021-06-05 03:39:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:43,112 INFO L225 Difference]: With dead ends: 3221 [2021-06-05 03:39:43,112 INFO L226 Difference]: Without dead ends: 3032 [2021-06-05 03:39:43,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-06-05 03:39:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1517. [2021-06-05 03:39:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 3.9399736147757256) internal successors, (5973), 1516 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 5973 transitions. [2021-06-05 03:39:43,153 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 5973 transitions. Word has length 25 [2021-06-05 03:39:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:43,153 INFO L482 AbstractCegarLoop]: Abstraction has 1517 states and 5973 transitions. [2021-06-05 03:39:43,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 5973 transitions. [2021-06-05 03:39:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:43,155 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:43,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:43,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 03:39:43,155 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:43,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1478782493, now seen corresponding path program 262 times [2021-06-05 03:39:43,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:43,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055003944] [2021-06-05 03:39:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:43,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:43,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055003944] [2021-06-05 03:39:43,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055003944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:43,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:43,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:43,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337621272] [2021-06-05 03:39:43,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:43,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:43,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:43,233 INFO L87 Difference]: Start difference. First operand 1517 states and 5973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:43,283 INFO L93 Difference]: Finished difference Result 3254 states and 11981 transitions. [2021-06-05 03:39:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:43,289 INFO L225 Difference]: With dead ends: 3254 [2021-06-05 03:39:43,289 INFO L226 Difference]: Without dead ends: 2969 [2021-06-05 03:39:43,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2021-06-05 03:39:43,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1454. [2021-06-05 03:39:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.94769442532691) internal successors, (5736), 1453 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5736 transitions. [2021-06-05 03:39:43,329 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5736 transitions. Word has length 25 [2021-06-05 03:39:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:43,330 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 5736 transitions. [2021-06-05 03:39:43,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5736 transitions. [2021-06-05 03:39:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:43,331 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:43,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:43,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 03:39:43,332 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:43,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1110957563, now seen corresponding path program 263 times [2021-06-05 03:39:43,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:43,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30139309] [2021-06-05 03:39:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:43,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:43,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30139309] [2021-06-05 03:39:43,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30139309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:43,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:43,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:43,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405663429] [2021-06-05 03:39:43,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:43,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:43,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:43,432 INFO L87 Difference]: Start difference. First operand 1454 states and 5736 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:43,506 INFO L93 Difference]: Finished difference Result 3190 states and 11776 transitions. [2021-06-05 03:39:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:43,514 INFO L225 Difference]: With dead ends: 3190 [2021-06-05 03:39:43,514 INFO L226 Difference]: Without dead ends: 3007 [2021-06-05 03:39:43,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-06-05 03:39:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1498. [2021-06-05 03:39:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.933199732798931) internal successors, (5888), 1497 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5888 transitions. [2021-06-05 03:39:43,572 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5888 transitions. Word has length 25 [2021-06-05 03:39:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:43,572 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5888 transitions. [2021-06-05 03:39:43,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5888 transitions. [2021-06-05 03:39:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:43,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:43,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:43,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 03:39:43,575 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:43,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:43,575 INFO L82 PathProgramCache]: Analyzing trace with hash 41438557, now seen corresponding path program 264 times [2021-06-05 03:39:43,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:43,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095241554] [2021-06-05 03:39:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:43,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:43,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095241554] [2021-06-05 03:39:43,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095241554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:43,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:43,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:43,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654596479] [2021-06-05 03:39:43,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:43,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:43,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:43,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:43,683 INFO L87 Difference]: Start difference. First operand 1498 states and 5888 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:43,739 INFO L93 Difference]: Finished difference Result 3229 states and 11879 transitions. [2021-06-05 03:39:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:43,745 INFO L225 Difference]: With dead ends: 3229 [2021-06-05 03:39:43,745 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 03:39:43,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 03:39:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1412. [2021-06-05 03:39:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9780297661233166) internal successors, (5613), 1411 states have internal predecessors, (5613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5613 transitions. [2021-06-05 03:39:43,785 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5613 transitions. Word has length 25 [2021-06-05 03:39:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:43,785 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5613 transitions. [2021-06-05 03:39:43,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5613 transitions. [2021-06-05 03:39:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:43,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:43,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:43,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 03:39:43,787 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:43,787 INFO L82 PathProgramCache]: Analyzing trace with hash 751563645, now seen corresponding path program 265 times [2021-06-05 03:39:43,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:43,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683714715] [2021-06-05 03:39:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:43,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:43,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683714715] [2021-06-05 03:39:43,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683714715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:43,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:43,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:43,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625592962] [2021-06-05 03:39:43,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:43,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:43,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:43,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:43,888 INFO L87 Difference]: Start difference. First operand 1412 states and 5613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:43,939 INFO L93 Difference]: Finished difference Result 3022 states and 11152 transitions. [2021-06-05 03:39:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:43,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:43,944 INFO L225 Difference]: With dead ends: 3022 [2021-06-05 03:39:43,944 INFO L226 Difference]: Without dead ends: 2863 [2021-06-05 03:39:43,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-06-05 03:39:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1444. [2021-06-05 03:39:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9674289674289676) internal successors, (5725), 1443 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5725 transitions. [2021-06-05 03:39:43,984 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5725 transitions. Word has length 25 [2021-06-05 03:39:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:43,984 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5725 transitions. [2021-06-05 03:39:43,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5725 transitions. [2021-06-05 03:39:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:43,986 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:43,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:43,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 03:39:43,986 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:43,987 INFO L82 PathProgramCache]: Analyzing trace with hash -256734339, now seen corresponding path program 266 times [2021-06-05 03:39:43,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:43,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739244506] [2021-06-05 03:39:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:44,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:44,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739244506] [2021-06-05 03:39:44,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739244506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:44,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:44,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:44,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206055447] [2021-06-05 03:39:44,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:44,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:44,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:44,102 INFO L87 Difference]: Start difference. First operand 1444 states and 5725 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:44,152 INFO L93 Difference]: Finished difference Result 3085 states and 11359 transitions. [2021-06-05 03:39:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:44,158 INFO L225 Difference]: With dead ends: 3085 [2021-06-05 03:39:44,158 INFO L226 Difference]: Without dead ends: 2831 [2021-06-05 03:39:44,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:44,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-06-05 03:39:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1412. [2021-06-05 03:39:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.966690290574061) internal successors, (5597), 1411 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5597 transitions. [2021-06-05 03:39:44,197 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5597 transitions. Word has length 25 [2021-06-05 03:39:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:44,197 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5597 transitions. [2021-06-05 03:39:44,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5597 transitions. [2021-06-05 03:39:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:44,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:44,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:44,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 03:39:44,199 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:44,200 INFO L82 PathProgramCache]: Analyzing trace with hash 790178329, now seen corresponding path program 267 times [2021-06-05 03:39:44,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:44,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706394821] [2021-06-05 03:39:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:44,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:44,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706394821] [2021-06-05 03:39:44,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706394821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:44,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:44,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:44,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912097926] [2021-06-05 03:39:44,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:44,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:44,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:44,294 INFO L87 Difference]: Start difference. First operand 1412 states and 5597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:44,345 INFO L93 Difference]: Finished difference Result 2973 states and 10958 transitions. [2021-06-05 03:39:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:44,351 INFO L225 Difference]: With dead ends: 2973 [2021-06-05 03:39:44,351 INFO L226 Difference]: Without dead ends: 2814 [2021-06-05 03:39:44,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:44,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-06-05 03:39:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1428. [2021-06-05 03:39:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 3.955851436580238) internal successors, (5645), 1427 states have internal predecessors, (5645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5645 transitions. [2021-06-05 03:39:44,391 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5645 transitions. Word has length 25 [2021-06-05 03:39:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:44,391 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 5645 transitions. [2021-06-05 03:39:44,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5645 transitions. [2021-06-05 03:39:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:44,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:44,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:44,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 03:39:44,393 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash -799756421, now seen corresponding path program 268 times [2021-06-05 03:39:44,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:44,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175607086] [2021-06-05 03:39:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:44,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:44,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175607086] [2021-06-05 03:39:44,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175607086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:44,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:44,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:44,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140065430] [2021-06-05 03:39:44,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:44,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:44,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:44,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:44,525 INFO L87 Difference]: Start difference. First operand 1428 states and 5645 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:44,601 INFO L93 Difference]: Finished difference Result 3003 states and 11051 transitions. [2021-06-05 03:39:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:44,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:44,606 INFO L225 Difference]: With dead ends: 3003 [2021-06-05 03:39:44,606 INFO L226 Difference]: Without dead ends: 2798 [2021-06-05 03:39:44,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-06-05 03:39:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1412. [2021-06-05 03:39:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.961020552799433) internal successors, (5589), 1411 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5589 transitions. [2021-06-05 03:39:44,645 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5589 transitions. Word has length 25 [2021-06-05 03:39:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:44,645 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5589 transitions. [2021-06-05 03:39:44,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5589 transitions. [2021-06-05 03:39:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:44,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:44,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:44,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 03:39:44,647 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1437919907, now seen corresponding path program 269 times [2021-06-05 03:39:44,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:44,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323067010] [2021-06-05 03:39:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:44,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:44,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323067010] [2021-06-05 03:39:44,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323067010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:44,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:44,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:44,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819565012] [2021-06-05 03:39:44,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:44,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:44,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:44,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:44,734 INFO L87 Difference]: Start difference. First operand 1412 states and 5589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:44,796 INFO L93 Difference]: Finished difference Result 3113 states and 11456 transitions. [2021-06-05 03:39:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:44,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:44,802 INFO L225 Difference]: With dead ends: 3113 [2021-06-05 03:39:44,802 INFO L226 Difference]: Without dead ends: 2924 [2021-06-05 03:39:44,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-06-05 03:39:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1475. [2021-06-05 03:39:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.932157394843962) internal successors, (5796), 1474 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 5796 transitions. [2021-06-05 03:39:44,842 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 5796 transitions. Word has length 25 [2021-06-05 03:39:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:44,842 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 5796 transitions. [2021-06-05 03:39:44,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 5796 transitions. [2021-06-05 03:39:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:44,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:44,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:44,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 03:39:44,844 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1139866949, now seen corresponding path program 270 times [2021-06-05 03:39:44,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:44,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436313117] [2021-06-05 03:39:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:44,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:44,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436313117] [2021-06-05 03:39:44,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436313117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:44,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:44,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:44,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294660508] [2021-06-05 03:39:44,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:44,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:44,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:44,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:44,934 INFO L87 Difference]: Start difference. First operand 1475 states and 5796 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:44,990 INFO L93 Difference]: Finished difference Result 3146 states and 11539 transitions. [2021-06-05 03:39:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:44,996 INFO L225 Difference]: With dead ends: 3146 [2021-06-05 03:39:44,996 INFO L226 Difference]: Without dead ends: 2837 [2021-06-05 03:39:44,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-06-05 03:39:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1388. [2021-06-05 03:39:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.966113914924297) internal successors, (5501), 1387 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5501 transitions. [2021-06-05 03:39:45,034 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5501 transitions. Word has length 25 [2021-06-05 03:39:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:45,034 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5501 transitions. [2021-06-05 03:39:45,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5501 transitions. [2021-06-05 03:39:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:45,036 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:45,036 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:45,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 03:39:45,036 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash 811236285, now seen corresponding path program 271 times [2021-06-05 03:39:45,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:45,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394237327] [2021-06-05 03:39:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:45,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:45,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394237327] [2021-06-05 03:39:45,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394237327] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:45,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:45,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:45,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642503622] [2021-06-05 03:39:45,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:45,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:45,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:45,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:45,133 INFO L87 Difference]: Start difference. First operand 1388 states and 5501 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:45,189 INFO L93 Difference]: Finished difference Result 2945 states and 10865 transitions. [2021-06-05 03:39:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:45,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:45,194 INFO L225 Difference]: With dead ends: 2945 [2021-06-05 03:39:45,195 INFO L226 Difference]: Without dead ends: 2786 [2021-06-05 03:39:45,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-06-05 03:39:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1436. [2021-06-05 03:39:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.961672473867596) internal successors, (5685), 1435 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5685 transitions. [2021-06-05 03:39:45,234 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5685 transitions. Word has length 25 [2021-06-05 03:39:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:45,234 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5685 transitions. [2021-06-05 03:39:45,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5685 transitions. [2021-06-05 03:39:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:45,236 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:45,236 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:45,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 03:39:45,236 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash -197061699, now seen corresponding path program 272 times [2021-06-05 03:39:45,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:45,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223100405] [2021-06-05 03:39:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:45,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:45,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223100405] [2021-06-05 03:39:45,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223100405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:45,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:45,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:45,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818692340] [2021-06-05 03:39:45,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:45,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:45,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:45,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:45,334 INFO L87 Difference]: Start difference. First operand 1436 states and 5685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:45,386 INFO L93 Difference]: Finished difference Result 3008 states and 11072 transitions. [2021-06-05 03:39:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:45,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:45,391 INFO L225 Difference]: With dead ends: 3008 [2021-06-05 03:39:45,391 INFO L226 Difference]: Without dead ends: 2754 [2021-06-05 03:39:45,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-06-05 03:39:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1404. [2021-06-05 03:39:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9607982893799) internal successors, (5557), 1403 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5557 transitions. [2021-06-05 03:39:45,429 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5557 transitions. Word has length 25 [2021-06-05 03:39:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:45,429 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5557 transitions. [2021-06-05 03:39:45,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5557 transitions. [2021-06-05 03:39:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:45,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:45,431 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:45,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 03:39:45,431 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:45,432 INFO L82 PathProgramCache]: Analyzing trace with hash -405184801, now seen corresponding path program 273 times [2021-06-05 03:39:45,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:45,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751489418] [2021-06-05 03:39:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:45,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:45,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751489418] [2021-06-05 03:39:45,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751489418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:45,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:45,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:45,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683065392] [2021-06-05 03:39:45,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:45,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:45,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:45,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:45,529 INFO L87 Difference]: Start difference. First operand 1404 states and 5557 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:45,588 INFO L93 Difference]: Finished difference Result 2850 states and 10514 transitions. [2021-06-05 03:39:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:45,594 INFO L225 Difference]: With dead ends: 2850 [2021-06-05 03:39:45,595 INFO L226 Difference]: Without dead ends: 2691 [2021-06-05 03:39:45,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-06-05 03:39:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 1420. [2021-06-05 03:39:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9499647639182522) internal successors, (5605), 1419 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5605 transitions. [2021-06-05 03:39:45,640 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5605 transitions. Word has length 25 [2021-06-05 03:39:45,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:45,640 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5605 transitions. [2021-06-05 03:39:45,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5605 transitions. [2021-06-05 03:39:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:45,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:45,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:45,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 03:39:45,642 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1947510495, now seen corresponding path program 274 times [2021-06-05 03:39:45,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:45,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519857748] [2021-06-05 03:39:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:45,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:45,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519857748] [2021-06-05 03:39:45,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519857748] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:45,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:45,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:45,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691416602] [2021-06-05 03:39:45,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:45,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:45,731 INFO L87 Difference]: Start difference. First operand 1420 states and 5605 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:45,795 INFO L93 Difference]: Finished difference Result 2738 states and 10177 transitions. [2021-06-05 03:39:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:45,800 INFO L225 Difference]: With dead ends: 2738 [2021-06-05 03:39:45,800 INFO L226 Difference]: Without dead ends: 2547 [2021-06-05 03:39:45,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-06-05 03:39:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 1404. [2021-06-05 03:39:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9550962223806128) internal successors, (5549), 1403 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5549 transitions. [2021-06-05 03:39:45,837 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5549 transitions. Word has length 25 [2021-06-05 03:39:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:45,837 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5549 transitions. [2021-06-05 03:39:45,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5549 transitions. [2021-06-05 03:39:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:45,839 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:45,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:45,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 03:39:45,839 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash -659210529, now seen corresponding path program 275 times [2021-06-05 03:39:45,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:45,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149992875] [2021-06-05 03:39:45,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:45,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:45,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149992875] [2021-06-05 03:39:45,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149992875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:45,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:45,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:45,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974221163] [2021-06-05 03:39:45,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:45,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:45,936 INFO L87 Difference]: Start difference. First operand 1404 states and 5549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:46,020 INFO L93 Difference]: Finished difference Result 2985 states and 11005 transitions. [2021-06-05 03:39:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:46,025 INFO L225 Difference]: With dead ends: 2985 [2021-06-05 03:39:46,026 INFO L226 Difference]: Without dead ends: 2810 [2021-06-05 03:39:46,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-06-05 03:39:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1444. [2021-06-05 03:39:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9424809424809424) internal successors, (5689), 1443 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5689 transitions. [2021-06-05 03:39:46,065 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5689 transitions. Word has length 25 [2021-06-05 03:39:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:46,065 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5689 transitions. [2021-06-05 03:39:46,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5689 transitions. [2021-06-05 03:39:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:46,067 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:46,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:46,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 03:39:46,067 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:46,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1980232381, now seen corresponding path program 276 times [2021-06-05 03:39:46,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:46,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600903389] [2021-06-05 03:39:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:46,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:46,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600903389] [2021-06-05 03:39:46,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600903389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:46,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:46,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:46,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085722309] [2021-06-05 03:39:46,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:46,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:46,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:46,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:46,164 INFO L87 Difference]: Start difference. First operand 1444 states and 5689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:46,214 INFO L93 Difference]: Finished difference Result 2937 states and 10805 transitions. [2021-06-05 03:39:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:46,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:46,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:46,219 INFO L225 Difference]: With dead ends: 2937 [2021-06-05 03:39:46,219 INFO L226 Difference]: Without dead ends: 2659 [2021-06-05 03:39:46,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-06-05 03:39:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 1388. [2021-06-05 03:39:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9603460706560925) internal successors, (5493), 1387 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5493 transitions. [2021-06-05 03:39:46,256 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5493 transitions. Word has length 25 [2021-06-05 03:39:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:46,256 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5493 transitions. [2021-06-05 03:39:46,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5493 transitions. [2021-06-05 03:39:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:46,258 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:46,258 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:46,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 03:39:46,258 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:46,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:46,258 INFO L82 PathProgramCache]: Analyzing trace with hash -456500583, now seen corresponding path program 277 times [2021-06-05 03:39:46,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:46,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446178232] [2021-06-05 03:39:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:46,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:46,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446178232] [2021-06-05 03:39:46,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446178232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:46,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:46,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:46,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167883666] [2021-06-05 03:39:46,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:46,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:46,358 INFO L87 Difference]: Start difference. First operand 1388 states and 5493 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:46,411 INFO L93 Difference]: Finished difference Result 2839 states and 10465 transitions. [2021-06-05 03:39:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:46,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:46,417 INFO L225 Difference]: With dead ends: 2839 [2021-06-05 03:39:46,417 INFO L226 Difference]: Without dead ends: 2680 [2021-06-05 03:39:46,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-06-05 03:39:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1412. [2021-06-05 03:39:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.952515946137491) internal successors, (5577), 1411 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5577 transitions. [2021-06-05 03:39:46,457 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5577 transitions. Word has length 25 [2021-06-05 03:39:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:46,458 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5577 transitions. [2021-06-05 03:39:46,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5577 transitions. [2021-06-05 03:39:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:46,460 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:46,460 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:46,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 03:39:46,460 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2046435333, now seen corresponding path program 278 times [2021-06-05 03:39:46,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:46,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843261995] [2021-06-05 03:39:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:46,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:46,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843261995] [2021-06-05 03:39:46,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843261995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:46,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:46,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:46,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248809904] [2021-06-05 03:39:46,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:46,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:46,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:46,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:46,571 INFO L87 Difference]: Start difference. First operand 1412 states and 5577 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:46,635 INFO L93 Difference]: Finished difference Result 2869 states and 10558 transitions. [2021-06-05 03:39:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:46,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:46,640 INFO L225 Difference]: With dead ends: 2869 [2021-06-05 03:39:46,641 INFO L226 Difference]: Without dead ends: 2664 [2021-06-05 03:39:46,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-06-05 03:39:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1396. [2021-06-05 03:39:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 3.957706093189964) internal successors, (5521), 1395 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5521 transitions. [2021-06-05 03:39:46,678 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5521 transitions. Word has length 25 [2021-06-05 03:39:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:46,678 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 5521 transitions. [2021-06-05 03:39:46,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5521 transitions. [2021-06-05 03:39:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:46,680 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:46,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:46,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 03:39:46,680 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:46,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:46,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1951179141, now seen corresponding path program 279 times [2021-06-05 03:39:46,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:46,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776581147] [2021-06-05 03:39:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:46,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:46,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776581147] [2021-06-05 03:39:46,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776581147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:46,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:46,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:46,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281597016] [2021-06-05 03:39:46,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:46,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:46,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:46,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:46,771 INFO L87 Difference]: Start difference. First operand 1396 states and 5521 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:46,821 INFO L93 Difference]: Finished difference Result 2793 states and 10300 transitions. [2021-06-05 03:39:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:46,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:46,826 INFO L225 Difference]: With dead ends: 2793 [2021-06-05 03:39:46,826 INFO L226 Difference]: Without dead ends: 2634 [2021-06-05 03:39:46,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-06-05 03:39:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1412. [2021-06-05 03:39:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9468462083628633) internal successors, (5569), 1411 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5569 transitions. [2021-06-05 03:39:46,863 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5569 transitions. Word has length 25 [2021-06-05 03:39:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:46,863 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5569 transitions. [2021-06-05 03:39:46,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5569 transitions. [2021-06-05 03:39:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:46,865 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:46,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:46,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 03:39:46,865 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash 401516155, now seen corresponding path program 280 times [2021-06-05 03:39:46,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:46,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752960096] [2021-06-05 03:39:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:46,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:46,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752960096] [2021-06-05 03:39:46,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752960096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:46,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:46,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:46,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939710139] [2021-06-05 03:39:46,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:46,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:46,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:46,957 INFO L87 Difference]: Start difference. First operand 1412 states and 5569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:47,022 INFO L93 Difference]: Finished difference Result 2681 states and 9963 transitions. [2021-06-05 03:39:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:47,027 INFO L225 Difference]: With dead ends: 2681 [2021-06-05 03:39:47,027 INFO L226 Difference]: Without dead ends: 2490 [2021-06-05 03:39:47,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-06-05 03:39:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1396. [2021-06-05 03:39:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 3.9519713261648746) internal successors, (5513), 1395 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5513 transitions. [2021-06-05 03:39:47,064 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5513 transitions. Word has length 25 [2021-06-05 03:39:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:47,064 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 5513 transitions. [2021-06-05 03:39:47,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5513 transitions. [2021-06-05 03:39:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:47,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:47,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:47,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 03:39:47,066 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash -534017187, now seen corresponding path program 281 times [2021-06-05 03:39:47,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:47,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864278596] [2021-06-05 03:39:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:47,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:47,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864278596] [2021-06-05 03:39:47,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864278596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:47,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:47,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:47,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219633269] [2021-06-05 03:39:47,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:47,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:47,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:47,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:47,166 INFO L87 Difference]: Start difference. First operand 1396 states and 5513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:47,227 INFO L93 Difference]: Finished difference Result 2831 states and 10437 transitions. [2021-06-05 03:39:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:47,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:47,232 INFO L225 Difference]: With dead ends: 2831 [2021-06-05 03:39:47,232 INFO L226 Difference]: Without dead ends: 2642 [2021-06-05 03:39:47,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-06-05 03:39:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1420. [2021-06-05 03:39:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.938689217758985) internal successors, (5589), 1419 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5589 transitions. [2021-06-05 03:39:47,269 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5589 transitions. Word has length 25 [2021-06-05 03:39:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:47,269 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5589 transitions. [2021-06-05 03:39:47,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5589 transitions. [2021-06-05 03:39:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:47,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:47,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:47,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 03:39:47,271 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1274969285, now seen corresponding path program 282 times [2021-06-05 03:39:47,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:47,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998361429] [2021-06-05 03:39:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:47,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:47,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998361429] [2021-06-05 03:39:47,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998361429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:47,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:47,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:47,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963954658] [2021-06-05 03:39:47,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:47,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:47,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:47,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:47,376 INFO L87 Difference]: Start difference. First operand 1420 states and 5589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:47,456 INFO L93 Difference]: Finished difference Result 2689 states and 9983 transitions. [2021-06-05 03:39:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:47,461 INFO L225 Difference]: With dead ends: 2689 [2021-06-05 03:39:47,461 INFO L226 Difference]: Without dead ends: 2482 [2021-06-05 03:39:47,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-06-05 03:39:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1388. [2021-06-05 03:39:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.95746214852199) internal successors, (5489), 1387 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5489 transitions. [2021-06-05 03:39:47,498 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5489 transitions. Word has length 25 [2021-06-05 03:39:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:47,498 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5489 transitions. [2021-06-05 03:39:47,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5489 transitions. [2021-06-05 03:39:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:47,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:47,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:47,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 03:39:47,500 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:47,500 INFO L82 PathProgramCache]: Analyzing trace with hash 371196095, now seen corresponding path program 283 times [2021-06-05 03:39:47,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:47,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097555351] [2021-06-05 03:39:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:47,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:47,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097555351] [2021-06-05 03:39:47,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097555351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:47,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:47,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:47,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624644984] [2021-06-05 03:39:47,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:47,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:47,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:47,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:47,601 INFO L87 Difference]: Start difference. First operand 1388 states and 5489 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:47,662 INFO L93 Difference]: Finished difference Result 3063 states and 11315 transitions. [2021-06-05 03:39:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:47,667 INFO L225 Difference]: With dead ends: 3063 [2021-06-05 03:39:47,667 INFO L226 Difference]: Without dead ends: 2874 [2021-06-05 03:39:47,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2021-06-05 03:39:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1440. [2021-06-05 03:39:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9506601806810284) internal successors, (5685), 1439 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5685 transitions. [2021-06-05 03:39:47,707 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5685 transitions. Word has length 25 [2021-06-05 03:39:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:47,707 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5685 transitions. [2021-06-05 03:39:47,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5685 transitions. [2021-06-05 03:39:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:47,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:47,709 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:47,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 03:39:47,709 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:47,709 INFO L82 PathProgramCache]: Analyzing trace with hash -369756003, now seen corresponding path program 284 times [2021-06-05 03:39:47,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:47,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113668617] [2021-06-05 03:39:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:47,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:47,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113668617] [2021-06-05 03:39:47,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113668617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:47,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:47,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:47,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471845572] [2021-06-05 03:39:47,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:47,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:47,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:47,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:47,810 INFO L87 Difference]: Start difference. First operand 1440 states and 5685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:47,871 INFO L93 Difference]: Finished difference Result 3049 states and 11246 transitions. [2021-06-05 03:39:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:47,877 INFO L225 Difference]: With dead ends: 3049 [2021-06-05 03:39:47,877 INFO L226 Difference]: Without dead ends: 2850 [2021-06-05 03:39:47,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2021-06-05 03:39:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1416. [2021-06-05 03:39:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.95547703180212) internal successors, (5597), 1415 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5597 transitions. [2021-06-05 03:39:47,915 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5597 transitions. Word has length 25 [2021-06-05 03:39:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:47,915 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5597 transitions. [2021-06-05 03:39:47,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:47,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5597 transitions. [2021-06-05 03:39:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:47,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:47,917 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:47,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 03:39:47,917 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:47,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1449839331, now seen corresponding path program 285 times [2021-06-05 03:39:47,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:47,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237229473] [2021-06-05 03:39:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:48,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:48,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237229473] [2021-06-05 03:39:48,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237229473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:48,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:48,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:48,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975760789] [2021-06-05 03:39:48,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:48,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:48,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:48,009 INFO L87 Difference]: Start difference. First operand 1416 states and 5597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:48,071 INFO L93 Difference]: Finished difference Result 3086 states and 11362 transitions. [2021-06-05 03:39:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:48,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:48,076 INFO L225 Difference]: With dead ends: 3086 [2021-06-05 03:39:48,077 INFO L226 Difference]: Without dead ends: 2897 [2021-06-05 03:39:48,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-06-05 03:39:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1479. [2021-06-05 03:39:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 3.9269282814614344) internal successors, (5804), 1478 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 5804 transitions. [2021-06-05 03:39:48,116 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 5804 transitions. Word has length 25 [2021-06-05 03:39:48,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:48,116 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 5804 transitions. [2021-06-05 03:39:48,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 5804 transitions. [2021-06-05 03:39:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:48,118 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:48,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:48,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 03:39:48,118 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:48,118 INFO L82 PathProgramCache]: Analyzing trace with hash 570113565, now seen corresponding path program 286 times [2021-06-05 03:39:48,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:48,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102687458] [2021-06-05 03:39:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:48,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:48,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102687458] [2021-06-05 03:39:48,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102687458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:48,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:48,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:48,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793627359] [2021-06-05 03:39:48,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:48,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:48,209 INFO L87 Difference]: Start difference. First operand 1479 states and 5804 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:48,262 INFO L93 Difference]: Finished difference Result 3119 states and 11445 transitions. [2021-06-05 03:39:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:48,268 INFO L225 Difference]: With dead ends: 3119 [2021-06-05 03:39:48,268 INFO L226 Difference]: Without dead ends: 2834 [2021-06-05 03:39:48,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-06-05 03:39:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1416. [2021-06-05 03:39:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.9356890459363956) internal successors, (5569), 1415 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5569 transitions. [2021-06-05 03:39:48,306 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5569 transitions. Word has length 25 [2021-06-05 03:39:48,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:48,306 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5569 transitions. [2021-06-05 03:39:48,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5569 transitions. [2021-06-05 03:39:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:48,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:48,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:48,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 03:39:48,309 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1703672197, now seen corresponding path program 287 times [2021-06-05 03:39:48,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:48,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814902330] [2021-06-05 03:39:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:48,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:48,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814902330] [2021-06-05 03:39:48,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814902330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:48,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:48,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:48,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797777317] [2021-06-05 03:39:48,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:48,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:48,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:48,419 INFO L87 Difference]: Start difference. First operand 1416 states and 5569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:48,486 INFO L93 Difference]: Finished difference Result 3035 states and 11170 transitions. [2021-06-05 03:39:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:48,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:48,491 INFO L225 Difference]: With dead ends: 3035 [2021-06-05 03:39:48,491 INFO L226 Difference]: Without dead ends: 2860 [2021-06-05 03:39:48,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-06-05 03:39:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1456. [2021-06-05 03:39:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9237113402061854) internal successors, (5709), 1455 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5709 transitions. [2021-06-05 03:39:48,530 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5709 transitions. Word has length 25 [2021-06-05 03:39:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:48,530 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5709 transitions. [2021-06-05 03:39:48,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5709 transitions. [2021-06-05 03:39:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:48,532 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:48,532 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:48,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 03:39:48,532 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:48,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1485320611, now seen corresponding path program 288 times [2021-06-05 03:39:48,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:48,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171427145] [2021-06-05 03:39:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:48,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:48,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171427145] [2021-06-05 03:39:48,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171427145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:48,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:48,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:48,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130847733] [2021-06-05 03:39:48,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:48,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:48,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:48,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:48,633 INFO L87 Difference]: Start difference. First operand 1456 states and 5709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:48,693 INFO L93 Difference]: Finished difference Result 2987 states and 10970 transitions. [2021-06-05 03:39:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:48,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:48,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:48,699 INFO L225 Difference]: With dead ends: 2987 [2021-06-05 03:39:48,699 INFO L226 Difference]: Without dead ends: 2685 [2021-06-05 03:39:48,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-06-05 03:39:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1376. [2021-06-05 03:39:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.9643636363636365) internal successors, (5451), 1375 states have internal predecessors, (5451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5451 transitions. [2021-06-05 03:39:48,737 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5451 transitions. Word has length 25 [2021-06-05 03:39:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:48,737 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 5451 transitions. [2021-06-05 03:39:48,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5451 transitions. [2021-06-05 03:39:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:48,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:48,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:48,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 03:39:48,739 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:48,739 INFO L82 PathProgramCache]: Analyzing trace with hash -194140965, now seen corresponding path program 289 times [2021-06-05 03:39:48,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:48,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231492604] [2021-06-05 03:39:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:48,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:48,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231492604] [2021-06-05 03:39:48,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231492604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:48,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:48,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:48,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353841550] [2021-06-05 03:39:48,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:48,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:48,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:48,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:48,843 INFO L87 Difference]: Start difference. First operand 1376 states and 5451 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:48,895 INFO L93 Difference]: Finished difference Result 2920 states and 10796 transitions. [2021-06-05 03:39:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:48,902 INFO L225 Difference]: With dead ends: 2920 [2021-06-05 03:39:48,903 INFO L226 Difference]: Without dead ends: 2761 [2021-06-05 03:39:48,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-06-05 03:39:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1432. [2021-06-05 03:39:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.96575821104123) internal successors, (5675), 1431 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5675 transitions. [2021-06-05 03:39:48,944 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5675 transitions. Word has length 25 [2021-06-05 03:39:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:48,944 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5675 transitions. [2021-06-05 03:39:48,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5675 transitions. [2021-06-05 03:39:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:48,946 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:48,946 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:48,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 03:39:48,946 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:48,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1202438949, now seen corresponding path program 290 times [2021-06-05 03:39:48,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:48,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147664342] [2021-06-05 03:39:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:49,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:49,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147664342] [2021-06-05 03:39:49,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147664342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:49,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:49,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:49,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429081004] [2021-06-05 03:39:49,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:49,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:49,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:49,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:49,058 INFO L87 Difference]: Start difference. First operand 1432 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:49,113 INFO L93 Difference]: Finished difference Result 2983 states and 11003 transitions. [2021-06-05 03:39:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:49,118 INFO L225 Difference]: With dead ends: 2983 [2021-06-05 03:39:49,118 INFO L226 Difference]: Without dead ends: 2729 [2021-06-05 03:39:49,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-06-05 03:39:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1400. [2021-06-05 03:39:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.964974982130093) internal successors, (5547), 1399 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5547 transitions. [2021-06-05 03:39:49,157 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5547 transitions. Word has length 25 [2021-06-05 03:39:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:49,157 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5547 transitions. [2021-06-05 03:39:49,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5547 transitions. [2021-06-05 03:39:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:49,159 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:49,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:49,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 03:39:49,159 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:49,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:49,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1839648893, now seen corresponding path program 291 times [2021-06-05 03:39:49,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:49,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211535797] [2021-06-05 03:39:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:49,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:49,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211535797] [2021-06-05 03:39:49,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211535797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:49,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:49,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:49,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368049854] [2021-06-05 03:39:49,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:49,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:49,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:49,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:49,252 INFO L87 Difference]: Start difference. First operand 1400 states and 5547 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:49,304 INFO L93 Difference]: Finished difference Result 2865 states and 10585 transitions. [2021-06-05 03:39:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:49,309 INFO L225 Difference]: With dead ends: 2865 [2021-06-05 03:39:49,309 INFO L226 Difference]: Without dead ends: 2706 [2021-06-05 03:39:49,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-06-05 03:39:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1416. [2021-06-05 03:39:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.954063604240283) internal successors, (5595), 1415 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5595 transitions. [2021-06-05 03:39:49,347 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5595 transitions. Word has length 25 [2021-06-05 03:39:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:49,347 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5595 transitions. [2021-06-05 03:39:49,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5595 transitions. [2021-06-05 03:39:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:49,349 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:49,349 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:49,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 03:39:49,349 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash -774821763, now seen corresponding path program 292 times [2021-06-05 03:39:49,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:49,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362294503] [2021-06-05 03:39:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:49,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:49,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362294503] [2021-06-05 03:39:49,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362294503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:49,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:49,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:49,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181847600] [2021-06-05 03:39:49,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:49,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:49,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:49,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:49,438 INFO L87 Difference]: Start difference. First operand 1416 states and 5595 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:49,506 INFO L93 Difference]: Finished difference Result 2889 states and 10661 transitions. [2021-06-05 03:39:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:49,511 INFO L225 Difference]: With dead ends: 2889 [2021-06-05 03:39:49,512 INFO L226 Difference]: Without dead ends: 2690 [2021-06-05 03:39:49,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-06-05 03:39:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1400. [2021-06-05 03:39:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9592566118656185) internal successors, (5539), 1399 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5539 transitions. [2021-06-05 03:39:49,554 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5539 transitions. Word has length 25 [2021-06-05 03:39:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:49,554 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5539 transitions. [2021-06-05 03:39:49,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5539 transitions. [2021-06-05 03:39:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:49,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:49,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:49,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 03:39:49,556 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:49,556 INFO L82 PathProgramCache]: Analyzing trace with hash 913424509, now seen corresponding path program 293 times [2021-06-05 03:39:49,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:49,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035881581] [2021-06-05 03:39:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:49,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:49,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035881581] [2021-06-05 03:39:49,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035881581] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:49,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:49,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:49,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473952235] [2021-06-05 03:39:49,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:49,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:49,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:49,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:49,653 INFO L87 Difference]: Start difference. First operand 1400 states and 5539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:49,720 INFO L93 Difference]: Finished difference Result 2980 states and 11008 transitions. [2021-06-05 03:39:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:49,725 INFO L225 Difference]: With dead ends: 2980 [2021-06-05 03:39:49,726 INFO L226 Difference]: Without dead ends: 2797 [2021-06-05 03:39:49,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2021-06-05 03:39:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 1444. [2021-06-05 03:39:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.943866943866944) internal successors, (5691), 1443 states have internal predecessors, (5691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5691 transitions. [2021-06-05 03:39:49,763 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5691 transitions. Word has length 25 [2021-06-05 03:39:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:49,764 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5691 transitions. [2021-06-05 03:39:49,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5691 transitions. [2021-06-05 03:39:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:49,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:49,766 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:49,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 03:39:49,766 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:49,766 INFO L82 PathProgramCache]: Analyzing trace with hash -90907429, now seen corresponding path program 294 times [2021-06-05 03:39:49,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:49,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063583306] [2021-06-05 03:39:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:49,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:49,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063583306] [2021-06-05 03:39:49,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063583306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:49,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:49,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:49,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979140961] [2021-06-05 03:39:49,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:49,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:49,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:49,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:49,862 INFO L87 Difference]: Start difference. First operand 1444 states and 5691 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:49,923 INFO L93 Difference]: Finished difference Result 3019 states and 11111 transitions. [2021-06-05 03:39:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:49,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:49,928 INFO L225 Difference]: With dead ends: 3019 [2021-06-05 03:39:49,928 INFO L226 Difference]: Without dead ends: 2737 [2021-06-05 03:39:49,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-06-05 03:39:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1384. [2021-06-05 03:39:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.9645697758496024) internal successors, (5483), 1383 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5483 transitions. [2021-06-05 03:39:49,965 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5483 transitions. Word has length 25 [2021-06-05 03:39:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:49,965 INFO L482 AbstractCegarLoop]: Abstraction has 1384 states and 5483 transitions. [2021-06-05 03:39:49,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5483 transitions. [2021-06-05 03:39:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:49,967 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:49,967 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:49,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 03:39:49,967 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:49,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1515460797, now seen corresponding path program 295 times [2021-06-05 03:39:49,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:49,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940513580] [2021-06-05 03:39:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:50,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:50,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940513580] [2021-06-05 03:39:50,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940513580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:50,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:50,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:50,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934926450] [2021-06-05 03:39:50,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:50,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:50,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:50,069 INFO L87 Difference]: Start difference. First operand 1384 states and 5483 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:50,142 INFO L93 Difference]: Finished difference Result 2860 states and 10544 transitions. [2021-06-05 03:39:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:50,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:50,148 INFO L225 Difference]: With dead ends: 2860 [2021-06-05 03:39:50,148 INFO L226 Difference]: Without dead ends: 2701 [2021-06-05 03:39:50,148 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-06-05 03:39:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1432. [2021-06-05 03:39:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.960167714884696) internal successors, (5667), 1431 states have internal predecessors, (5667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5667 transitions. [2021-06-05 03:39:50,185 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5667 transitions. Word has length 25 [2021-06-05 03:39:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:50,185 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5667 transitions. [2021-06-05 03:39:50,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5667 transitions. [2021-06-05 03:39:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:50,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:50,187 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:50,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 03:39:50,187 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:50,188 INFO L82 PathProgramCache]: Analyzing trace with hash 507162813, now seen corresponding path program 296 times [2021-06-05 03:39:50,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:50,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607785457] [2021-06-05 03:39:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:50,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:50,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607785457] [2021-06-05 03:39:50,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607785457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:50,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:50,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:50,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771572174] [2021-06-05 03:39:50,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:50,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:50,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:50,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:50,281 INFO L87 Difference]: Start difference. First operand 1432 states and 5667 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:50,335 INFO L93 Difference]: Finished difference Result 2923 states and 10751 transitions. [2021-06-05 03:39:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:50,340 INFO L225 Difference]: With dead ends: 2923 [2021-06-05 03:39:50,341 INFO L226 Difference]: Without dead ends: 2669 [2021-06-05 03:39:50,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-06-05 03:39:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1400. [2021-06-05 03:39:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9592566118656185) internal successors, (5539), 1399 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5539 transitions. [2021-06-05 03:39:50,377 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5539 transitions. Word has length 25 [2021-06-05 03:39:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:50,377 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5539 transitions. [2021-06-05 03:39:50,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5539 transitions. [2021-06-05 03:39:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:50,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:50,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:50,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 03:39:50,379 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1728997379, now seen corresponding path program 297 times [2021-06-05 03:39:50,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:50,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022100685] [2021-06-05 03:39:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:50,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:50,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022100685] [2021-06-05 03:39:50,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022100685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:50,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:50,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:50,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308312472] [2021-06-05 03:39:50,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:50,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:50,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:50,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:50,473 INFO L87 Difference]: Start difference. First operand 1400 states and 5539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:50,526 INFO L93 Difference]: Finished difference Result 2765 states and 10193 transitions. [2021-06-05 03:39:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:50,531 INFO L225 Difference]: With dead ends: 2765 [2021-06-05 03:39:50,531 INFO L226 Difference]: Without dead ends: 2606 [2021-06-05 03:39:50,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:50,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-06-05 03:39:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1416. [2021-06-05 03:39:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.948409893992933) internal successors, (5587), 1415 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5587 transitions. [2021-06-05 03:39:50,568 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5587 transitions. Word has length 25 [2021-06-05 03:39:50,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:50,568 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5587 transitions. [2021-06-05 03:39:50,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5587 transitions. [2021-06-05 03:39:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:50,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:50,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:50,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 03:39:50,570 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:50,570 INFO L82 PathProgramCache]: Analyzing trace with hash 623697917, now seen corresponding path program 298 times [2021-06-05 03:39:50,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:50,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624847896] [2021-06-05 03:39:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:50,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:50,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624847896] [2021-06-05 03:39:50,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624847896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:50,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:50,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:50,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939516457] [2021-06-05 03:39:50,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:50,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:50,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:50,672 INFO L87 Difference]: Start difference. First operand 1416 states and 5587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:50,739 INFO L93 Difference]: Finished difference Result 2653 states and 9856 transitions. [2021-06-05 03:39:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:50,744 INFO L225 Difference]: With dead ends: 2653 [2021-06-05 03:39:50,744 INFO L226 Difference]: Without dead ends: 2462 [2021-06-05 03:39:50,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-06-05 03:39:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1400. [2021-06-05 03:39:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9535382416011435) internal successors, (5531), 1399 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5531 transitions. [2021-06-05 03:39:50,780 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5531 transitions. Word has length 25 [2021-06-05 03:39:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:50,780 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5531 transitions. [2021-06-05 03:39:50,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5531 transitions. [2021-06-05 03:39:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:50,781 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:50,782 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:50,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 03:39:50,782 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1983023107, now seen corresponding path program 299 times [2021-06-05 03:39:50,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:50,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451861000] [2021-06-05 03:39:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:50,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:50,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451861000] [2021-06-05 03:39:50,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451861000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:50,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:50,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:50,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456705063] [2021-06-05 03:39:50,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:50,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:50,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:50,876 INFO L87 Difference]: Start difference. First operand 1400 states and 5531 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:50,937 INFO L93 Difference]: Finished difference Result 2900 states and 10684 transitions. [2021-06-05 03:39:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:50,942 INFO L225 Difference]: With dead ends: 2900 [2021-06-05 03:39:50,942 INFO L226 Difference]: Without dead ends: 2725 [2021-06-05 03:39:50,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-06-05 03:39:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1440. [2021-06-05 03:39:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9409312022237666) internal successors, (5671), 1439 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5671 transitions. [2021-06-05 03:39:50,980 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5671 transitions. Word has length 25 [2021-06-05 03:39:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:50,980 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5671 transitions. [2021-06-05 03:39:50,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5671 transitions. [2021-06-05 03:39:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:50,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:50,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:50,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 03:39:50,982 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash 656419803, now seen corresponding path program 300 times [2021-06-05 03:39:50,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:50,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779104745] [2021-06-05 03:39:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:51,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:51,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779104745] [2021-06-05 03:39:51,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779104745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:51,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:51,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:51,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530292205] [2021-06-05 03:39:51,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:51,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:51,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:51,078 INFO L87 Difference]: Start difference. First operand 1440 states and 5671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:51,127 INFO L93 Difference]: Finished difference Result 2852 states and 10484 transitions. [2021-06-05 03:39:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:51,132 INFO L225 Difference]: With dead ends: 2852 [2021-06-05 03:39:51,132 INFO L226 Difference]: Without dead ends: 2574 [2021-06-05 03:39:51,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-06-05 03:39:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1384. [2021-06-05 03:39:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.9587852494577005) internal successors, (5475), 1383 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5475 transitions. [2021-06-05 03:39:51,168 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5475 transitions. Word has length 25 [2021-06-05 03:39:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:51,168 INFO L482 AbstractCegarLoop]: Abstraction has 1384 states and 5475 transitions. [2021-06-05 03:39:51,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5475 transitions. [2021-06-05 03:39:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:51,170 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:51,170 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:51,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 03:39:51,170 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1090089759, now seen corresponding path program 301 times [2021-06-05 03:39:51,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:51,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683960536] [2021-06-05 03:39:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:51,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:51,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683960536] [2021-06-05 03:39:51,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683960536] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:51,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:51,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:51,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301181991] [2021-06-05 03:39:51,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:51,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:51,253 INFO L87 Difference]: Start difference. First operand 1384 states and 5475 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:51,308 INFO L93 Difference]: Finished difference Result 2710 states and 9998 transitions. [2021-06-05 03:39:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:51,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:51,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:51,313 INFO L225 Difference]: With dead ends: 2710 [2021-06-05 03:39:51,314 INFO L226 Difference]: Without dead ends: 2551 [2021-06-05 03:39:51,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:51,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-06-05 03:39:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1408. [2021-06-05 03:39:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.9509594882729213) internal successors, (5559), 1407 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5559 transitions. [2021-06-05 03:39:51,352 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5559 transitions. Word has length 25 [2021-06-05 03:39:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:51,352 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 5559 transitions. [2021-06-05 03:39:51,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5559 transitions. [2021-06-05 03:39:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:51,354 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:51,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:51,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 03:39:51,354 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:51,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1524380897, now seen corresponding path program 302 times [2021-06-05 03:39:51,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:51,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573429014] [2021-06-05 03:39:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:51,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:51,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573429014] [2021-06-05 03:39:51,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573429014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:51,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:51,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:51,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007580790] [2021-06-05 03:39:51,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:51,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:51,441 INFO L87 Difference]: Start difference. First operand 1408 states and 5559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:51,512 INFO L93 Difference]: Finished difference Result 2734 states and 10074 transitions. [2021-06-05 03:39:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:51,517 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 03:39:51,517 INFO L226 Difference]: Without dead ends: 2535 [2021-06-05 03:39:51,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2021-06-05 03:39:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1392. [2021-06-05 03:39:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9561466570812365) internal successors, (5503), 1391 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5503 transitions. [2021-06-05 03:39:51,575 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5503 transitions. Word has length 25 [2021-06-05 03:39:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:51,575 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5503 transitions. [2021-06-05 03:39:51,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5503 transitions. [2021-06-05 03:39:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:51,577 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:51,577 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:51,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 03:39:51,577 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:51,578 INFO L82 PathProgramCache]: Analyzing trace with hash 243292797, now seen corresponding path program 303 times [2021-06-05 03:39:51,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:51,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934547546] [2021-06-05 03:39:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:51,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:51,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934547546] [2021-06-05 03:39:51,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934547546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:51,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:51,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:51,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355730722] [2021-06-05 03:39:51,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:51,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:51,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:51,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:51,660 INFO L87 Difference]: Start difference. First operand 1392 states and 5503 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:51,709 INFO L93 Difference]: Finished difference Result 2654 states and 9786 transitions. [2021-06-05 03:39:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:51,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:51,713 INFO L225 Difference]: With dead ends: 2654 [2021-06-05 03:39:51,714 INFO L226 Difference]: Without dead ends: 2495 [2021-06-05 03:39:51,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-06-05 03:39:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1408. [2021-06-05 03:39:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.945273631840796) internal successors, (5551), 1407 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5551 transitions. [2021-06-05 03:39:51,749 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5551 transitions. Word has length 25 [2021-06-05 03:39:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:51,749 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 5551 transitions. [2021-06-05 03:39:51,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5551 transitions. [2021-06-05 03:39:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:51,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:51,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:51,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 03:39:51,751 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:51,751 INFO L82 PathProgramCache]: Analyzing trace with hash 885631775, now seen corresponding path program 304 times [2021-06-05 03:39:51,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:51,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877176958] [2021-06-05 03:39:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:51,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:51,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877176958] [2021-06-05 03:39:51,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877176958] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:51,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:51,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:51,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077401928] [2021-06-05 03:39:51,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:51,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:51,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:51,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:51,833 INFO L87 Difference]: Start difference. First operand 1408 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:51,894 INFO L93 Difference]: Finished difference Result 2542 states and 9449 transitions. [2021-06-05 03:39:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:51,899 INFO L225 Difference]: With dead ends: 2542 [2021-06-05 03:39:51,899 INFO L226 Difference]: Without dead ends: 2351 [2021-06-05 03:39:51,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-06-05 03:39:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1392. [2021-06-05 03:39:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9503953989935296) internal successors, (5495), 1391 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5495 transitions. [2021-06-05 03:39:51,934 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5495 transitions. Word has length 25 [2021-06-05 03:39:51,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:51,934 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5495 transitions. [2021-06-05 03:39:51,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5495 transitions. [2021-06-05 03:39:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:51,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:51,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:51,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 03:39:51,936 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash 263000863, now seen corresponding path program 305 times [2021-06-05 03:39:51,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:51,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459396287] [2021-06-05 03:39:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:52,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:52,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459396287] [2021-06-05 03:39:52,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459396287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:52,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:52,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:52,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803621830] [2021-06-05 03:39:52,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:52,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:52,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:52,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:52,019 INFO L87 Difference]: Start difference. First operand 1392 states and 5495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:52,079 INFO L93 Difference]: Finished difference Result 2558 states and 9521 transitions. [2021-06-05 03:39:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:52,084 INFO L225 Difference]: With dead ends: 2558 [2021-06-05 03:39:52,084 INFO L226 Difference]: Without dead ends: 2375 [2021-06-05 03:39:52,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-06-05 03:39:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1416. [2021-06-05 03:39:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.9371024734982334) internal successors, (5571), 1415 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5571 transitions. [2021-06-05 03:39:52,119 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5571 transitions. Word has length 25 [2021-06-05 03:39:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:52,119 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5571 transitions. [2021-06-05 03:39:52,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5571 transitions. [2021-06-05 03:39:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:52,121 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:52,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:52,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 03:39:52,121 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1780336131, now seen corresponding path program 306 times [2021-06-05 03:39:52,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:52,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094711573] [2021-06-05 03:39:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:52,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:52,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094711573] [2021-06-05 03:39:52,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094711573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:52,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:52,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:52,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059391249] [2021-06-05 03:39:52,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:52,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:52,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:52,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:52,203 INFO L87 Difference]: Start difference. First operand 1416 states and 5571 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:52,262 INFO L93 Difference]: Finished difference Result 2374 states and 8908 transitions. [2021-06-05 03:39:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:52,266 INFO L225 Difference]: With dead ends: 2374 [2021-06-05 03:39:52,267 INFO L226 Difference]: Without dead ends: 2167 [2021-06-05 03:39:52,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-06-05 03:39:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1384. [2021-06-05 03:39:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.95589298626175) internal successors, (5471), 1383 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5471 transitions. [2021-06-05 03:39:52,300 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5471 transitions. Word has length 25 [2021-06-05 03:39:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:52,300 INFO L482 AbstractCegarLoop]: Abstraction has 1384 states and 5471 transitions. [2021-06-05 03:39:52,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5471 transitions. [2021-06-05 03:39:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:52,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:52,302 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:52,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 03:39:52,302 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash -829969633, now seen corresponding path program 307 times [2021-06-05 03:39:52,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:52,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642656605] [2021-06-05 03:39:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:52,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:52,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642656605] [2021-06-05 03:39:52,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642656605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:52,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:52,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:52,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429475292] [2021-06-05 03:39:52,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:52,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:52,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:52,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:52,395 INFO L87 Difference]: Start difference. First operand 1384 states and 5471 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:52,487 INFO L93 Difference]: Finished difference Result 2933 states and 10857 transitions. [2021-06-05 03:39:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:52,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:52,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:52,493 INFO L225 Difference]: With dead ends: 2933 [2021-06-05 03:39:52,493 INFO L226 Difference]: Without dead ends: 2750 [2021-06-05 03:39:52,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2021-06-05 03:39:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 1428. [2021-06-05 03:39:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 3.9516468114926417) internal successors, (5639), 1427 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5639 transitions. [2021-06-05 03:39:52,533 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5639 transitions. Word has length 25 [2021-06-05 03:39:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:52,533 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 5639 transitions. [2021-06-05 03:39:52,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5639 transitions. [2021-06-05 03:39:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:52,535 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:52,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:52,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 03:39:52,535 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1421660669, now seen corresponding path program 308 times [2021-06-05 03:39:52,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:52,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653615289] [2021-06-05 03:39:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:52,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:52,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653615289] [2021-06-05 03:39:52,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653615289] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:52,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:52,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:52,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544108225] [2021-06-05 03:39:52,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:52,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:52,623 INFO L87 Difference]: Start difference. First operand 1428 states and 5639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:52,686 INFO L93 Difference]: Finished difference Result 2925 states and 10805 transitions. [2021-06-05 03:39:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:52,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:52,691 INFO L225 Difference]: With dead ends: 2925 [2021-06-05 03:39:52,691 INFO L226 Difference]: Without dead ends: 2726 [2021-06-05 03:39:52,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-06-05 03:39:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 1404. [2021-06-05 03:39:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9565217391304346) internal successors, (5551), 1403 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5551 transitions. [2021-06-05 03:39:52,728 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5551 transitions. Word has length 25 [2021-06-05 03:39:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:52,728 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5551 transitions. [2021-06-05 03:39:52,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5551 transitions. [2021-06-05 03:39:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:52,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:52,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:52,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 03:39:52,730 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1643962237, now seen corresponding path program 309 times [2021-06-05 03:39:52,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:52,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705182248] [2021-06-05 03:39:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:52,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:52,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705182248] [2021-06-05 03:39:52,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705182248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:52,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:52,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:52,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980572289] [2021-06-05 03:39:52,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:52,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:52,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:52,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:52,827 INFO L87 Difference]: Start difference. First operand 1404 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:52,905 INFO L93 Difference]: Finished difference Result 2861 states and 10569 transitions. [2021-06-05 03:39:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:52,910 INFO L225 Difference]: With dead ends: 2861 [2021-06-05 03:39:52,911 INFO L226 Difference]: Without dead ends: 2678 [2021-06-05 03:39:52,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-06-05 03:39:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1448. [2021-06-05 03:39:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9412577747062887) internal successors, (5703), 1447 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5703 transitions. [2021-06-05 03:39:52,948 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5703 transitions. Word has length 25 [2021-06-05 03:39:52,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:52,948 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5703 transitions. [2021-06-05 03:39:52,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5703 transitions. [2021-06-05 03:39:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:52,950 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:52,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:52,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 03:39:52,951 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:52,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1933437059, now seen corresponding path program 310 times [2021-06-05 03:39:52,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:52,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731942456] [2021-06-05 03:39:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:53,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:53,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731942456] [2021-06-05 03:39:53,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731942456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:53,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:53,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:53,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136453090] [2021-06-05 03:39:53,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:53,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:53,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:53,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:53,047 INFO L87 Difference]: Start difference. First operand 1448 states and 5703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:53,100 INFO L93 Difference]: Finished difference Result 2900 states and 10672 transitions. [2021-06-05 03:39:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:53,105 INFO L225 Difference]: With dead ends: 2900 [2021-06-05 03:39:53,105 INFO L226 Difference]: Without dead ends: 2634 [2021-06-05 03:39:53,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-06-05 03:39:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1404. [2021-06-05 03:39:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9422665716322167) internal successors, (5531), 1403 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5531 transitions. [2021-06-05 03:39:53,142 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5531 transitions. Word has length 25 [2021-06-05 03:39:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:53,142 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5531 transitions. [2021-06-05 03:39:53,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5531 transitions. [2021-06-05 03:39:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:53,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:53,144 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:53,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 03:39:53,144 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1668657445, now seen corresponding path program 311 times [2021-06-05 03:39:53,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:53,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759263274] [2021-06-05 03:39:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:53,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:53,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759263274] [2021-06-05 03:39:53,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759263274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:53,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:53,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:53,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721260702] [2021-06-05 03:39:53,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:53,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:53,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:53,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:53,241 INFO L87 Difference]: Start difference. First operand 1404 states and 5531 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:53,302 INFO L93 Difference]: Finished difference Result 2801 states and 10313 transitions. [2021-06-05 03:39:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:53,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:53,307 INFO L225 Difference]: With dead ends: 2801 [2021-06-05 03:39:53,307 INFO L226 Difference]: Without dead ends: 2626 [2021-06-05 03:39:53,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-06-05 03:39:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1444. [2021-06-05 03:39:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.93000693000693) internal successors, (5671), 1443 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5671 transitions. [2021-06-05 03:39:53,344 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5671 transitions. Word has length 25 [2021-06-05 03:39:53,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:53,344 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5671 transitions. [2021-06-05 03:39:53,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5671 transitions. [2021-06-05 03:39:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:53,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:53,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:53,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 03:39:53,346 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1450305859, now seen corresponding path program 312 times [2021-06-05 03:39:53,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:53,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973572700] [2021-06-05 03:39:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:53,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:53,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973572700] [2021-06-05 03:39:53,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973572700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:53,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:53,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:53,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745478812] [2021-06-05 03:39:53,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:53,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:53,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:53,442 INFO L87 Difference]: Start difference. First operand 1444 states and 5671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:53,500 INFO L93 Difference]: Finished difference Result 2753 states and 10113 transitions. [2021-06-05 03:39:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:53,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:53,505 INFO L225 Difference]: With dead ends: 2753 [2021-06-05 03:39:53,505 INFO L226 Difference]: Without dead ends: 2463 [2021-06-05 03:39:53,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-06-05 03:39:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1376. [2021-06-05 03:39:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.9614545454545453) internal successors, (5447), 1375 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5447 transitions. [2021-06-05 03:39:53,541 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5447 transitions. Word has length 25 [2021-06-05 03:39:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:53,541 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 5447 transitions. [2021-06-05 03:39:53,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5447 transitions. [2021-06-05 03:39:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:53,543 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:53,543 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:53,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 03:39:53,543 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:53,543 INFO L82 PathProgramCache]: Analyzing trace with hash -772928521, now seen corresponding path program 313 times [2021-06-05 03:39:53,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:53,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040142794] [2021-06-05 03:39:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:53,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:53,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040142794] [2021-06-05 03:39:53,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040142794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:53,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:53,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:53,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343430552] [2021-06-05 03:39:53,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:53,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:53,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:53,626 INFO L87 Difference]: Start difference. First operand 1376 states and 5447 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:53,677 INFO L93 Difference]: Finished difference Result 2713 states and 10002 transitions. [2021-06-05 03:39:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:53,682 INFO L225 Difference]: With dead ends: 2713 [2021-06-05 03:39:53,682 INFO L226 Difference]: Without dead ends: 2554 [2021-06-05 03:39:53,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-06-05 03:39:53,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1404. [2021-06-05 03:39:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9565217391304346) internal successors, (5551), 1403 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5551 transitions. [2021-06-05 03:39:53,719 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5551 transitions. Word has length 25 [2021-06-05 03:39:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:53,719 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5551 transitions. [2021-06-05 03:39:53,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5551 transitions. [2021-06-05 03:39:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:53,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:53,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:53,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 03:39:53,721 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:53,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1932104025, now seen corresponding path program 314 times [2021-06-05 03:39:53,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:53,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873023779] [2021-06-05 03:39:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:53,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:53,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873023779] [2021-06-05 03:39:53,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873023779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:53,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:53,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:53,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503337842] [2021-06-05 03:39:53,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:53,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:53,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:53,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:53,808 INFO L87 Difference]: Start difference. First operand 1404 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:53,876 INFO L93 Difference]: Finished difference Result 2743 states and 10095 transitions. [2021-06-05 03:39:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:53,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:53,881 INFO L225 Difference]: With dead ends: 2743 [2021-06-05 03:39:53,881 INFO L226 Difference]: Without dead ends: 2538 [2021-06-05 03:39:53,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-06-05 03:39:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1388. [2021-06-05 03:39:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9617880317231435) internal successors, (5495), 1387 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5495 transitions. [2021-06-05 03:39:53,918 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5495 transitions. Word has length 25 [2021-06-05 03:39:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:53,918 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5495 transitions. [2021-06-05 03:39:53,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5495 transitions. [2021-06-05 03:39:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:53,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:53,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:53,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 03:39:53,921 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash -979736487, now seen corresponding path program 315 times [2021-06-05 03:39:53,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:53,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923984646] [2021-06-05 03:39:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:54,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:54,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923984646] [2021-06-05 03:39:54,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923984646] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:54,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:54,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:54,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534244357] [2021-06-05 03:39:54,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:54,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:54,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:54,013 INFO L87 Difference]: Start difference. First operand 1388 states and 5495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:54,068 INFO L93 Difference]: Finished difference Result 2707 states and 9977 transitions. [2021-06-05 03:39:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:54,073 INFO L225 Difference]: With dead ends: 2707 [2021-06-05 03:39:54,073 INFO L226 Difference]: Without dead ends: 2548 [2021-06-05 03:39:54,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2021-06-05 03:39:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1404. [2021-06-05 03:39:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9508196721311477) internal successors, (5543), 1403 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5543 transitions. [2021-06-05 03:39:54,109 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5543 transitions. Word has length 25 [2021-06-05 03:39:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:54,109 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5543 transitions. [2021-06-05 03:39:54,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5543 transitions. [2021-06-05 03:39:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:54,111 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:54,111 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:54,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 03:39:54,111 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash 700760153, now seen corresponding path program 316 times [2021-06-05 03:39:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:54,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753087222] [2021-06-05 03:39:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:54,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:54,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753087222] [2021-06-05 03:39:54,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753087222] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:54,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:54,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:54,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518882944] [2021-06-05 03:39:54,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:54,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:54,186 INFO L87 Difference]: Start difference. First operand 1404 states and 5543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:54,258 INFO L93 Difference]: Finished difference Result 2731 states and 10053 transitions. [2021-06-05 03:39:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:54,263 INFO L225 Difference]: With dead ends: 2731 [2021-06-05 03:39:54,263 INFO L226 Difference]: Without dead ends: 2532 [2021-06-05 03:39:54,263 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-06-05 03:39:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1388. [2021-06-05 03:39:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9560201874549388) internal successors, (5487), 1387 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5487 transitions. [2021-06-05 03:39:54,299 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5487 transitions. Word has length 25 [2021-06-05 03:39:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:54,299 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5487 transitions. [2021-06-05 03:39:54,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5487 transitions. [2021-06-05 03:39:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:54,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:54,301 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:54,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 03:39:54,301 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:54,301 INFO L82 PathProgramCache]: Analyzing trace with hash 437425467, now seen corresponding path program 317 times [2021-06-05 03:39:54,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:54,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433280616] [2021-06-05 03:39:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:54,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:54,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433280616] [2021-06-05 03:39:54,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433280616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:54,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:54,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:54,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352031877] [2021-06-05 03:39:54,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:54,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:54,376 INFO L87 Difference]: Start difference. First operand 1388 states and 5487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:54,441 INFO L93 Difference]: Finished difference Result 2779 states and 10239 transitions. [2021-06-05 03:39:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:54,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:54,446 INFO L225 Difference]: With dead ends: 2779 [2021-06-05 03:39:54,446 INFO L226 Difference]: Without dead ends: 2590 [2021-06-05 03:39:54,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-05 03:39:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1416. [2021-06-05 03:39:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.939929328621908) internal successors, (5575), 1415 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5575 transitions. [2021-06-05 03:39:54,484 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5575 transitions. Word has length 25 [2021-06-05 03:39:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:54,484 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5575 transitions. [2021-06-05 03:39:54,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5575 transitions. [2021-06-05 03:39:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:54,486 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:54,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:54,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 03:39:54,486 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:54,486 INFO L82 PathProgramCache]: Analyzing trace with hash -954719079, now seen corresponding path program 318 times [2021-06-05 03:39:54,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:54,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019722886] [2021-06-05 03:39:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:54,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:54,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019722886] [2021-06-05 03:39:54,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019722886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:54,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:54,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:54,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721152951] [2021-06-05 03:39:54,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:54,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:54,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:54,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:54,562 INFO L87 Difference]: Start difference. First operand 1416 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:54,626 INFO L93 Difference]: Finished difference Result 2773 states and 10194 transitions. [2021-06-05 03:39:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:54,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:54,631 INFO L225 Difference]: With dead ends: 2773 [2021-06-05 03:39:54,631 INFO L226 Difference]: Without dead ends: 2554 [2021-06-05 03:39:54,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-06-05 03:39:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1380. [2021-06-05 03:39:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.9615663524292968) internal successors, (5463), 1379 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5463 transitions. [2021-06-05 03:39:54,668 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5463 transitions. Word has length 25 [2021-06-05 03:39:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:54,668 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 5463 transitions. [2021-06-05 03:39:54,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5463 transitions. [2021-06-05 03:39:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:54,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:54,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:54,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 03:39:54,670 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1253830567, now seen corresponding path program 319 times [2021-06-05 03:39:54,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:54,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480837314] [2021-06-05 03:39:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:54,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:54,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480837314] [2021-06-05 03:39:54,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480837314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:54,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:54,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:54,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820677002] [2021-06-05 03:39:54,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:54,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:54,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:54,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:54,762 INFO L87 Difference]: Start difference. First operand 1380 states and 5463 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:54,812 INFO L93 Difference]: Finished difference Result 2677 states and 9854 transitions. [2021-06-05 03:39:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:54,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:54,817 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 03:39:54,817 INFO L226 Difference]: Without dead ends: 2518 [2021-06-05 03:39:54,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-06-05 03:39:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1404. [2021-06-05 03:39:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9536707056307914) internal successors, (5547), 1403 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5547 transitions. [2021-06-05 03:39:54,852 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5547 transitions. Word has length 25 [2021-06-05 03:39:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:54,853 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5547 transitions. [2021-06-05 03:39:54,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5547 transitions. [2021-06-05 03:39:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:54,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:54,854 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:54,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 03:39:54,855 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1451201979, now seen corresponding path program 320 times [2021-06-05 03:39:54,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:54,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397245244] [2021-06-05 03:39:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:54,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:54,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397245244] [2021-06-05 03:39:54,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397245244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:54,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:54,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:54,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056209732] [2021-06-05 03:39:54,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:54,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:54,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:54,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:54,946 INFO L87 Difference]: Start difference. First operand 1404 states and 5547 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:55,037 INFO L93 Difference]: Finished difference Result 2707 states and 9947 transitions. [2021-06-05 03:39:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:55,041 INFO L225 Difference]: With dead ends: 2707 [2021-06-05 03:39:55,042 INFO L226 Difference]: Without dead ends: 2502 [2021-06-05 03:39:55,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-06-05 03:39:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1388. [2021-06-05 03:39:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.958904109589041) internal successors, (5491), 1387 states have internal predecessors, (5491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5491 transitions. [2021-06-05 03:39:55,077 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5491 transitions. Word has length 25 [2021-06-05 03:39:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:55,077 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5491 transitions. [2021-06-05 03:39:55,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5491 transitions. [2021-06-05 03:39:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:55,079 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:55,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:55,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 03:39:55,079 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash 65019865, now seen corresponding path program 321 times [2021-06-05 03:39:55,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:55,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911154022] [2021-06-05 03:39:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:55,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:55,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911154022] [2021-06-05 03:39:55,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911154022] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:55,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:55,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:55,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419833155] [2021-06-05 03:39:55,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:55,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:55,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:55,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:55,167 INFO L87 Difference]: Start difference. First operand 1388 states and 5491 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:55,221 INFO L93 Difference]: Finished difference Result 2631 states and 9689 transitions. [2021-06-05 03:39:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:55,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:55,226 INFO L225 Difference]: With dead ends: 2631 [2021-06-05 03:39:55,226 INFO L226 Difference]: Without dead ends: 2472 [2021-06-05 03:39:55,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-06-05 03:39:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1404. [2021-06-05 03:39:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.947968638631504) internal successors, (5539), 1403 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5539 transitions. [2021-06-05 03:39:55,262 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5539 transitions. Word has length 25 [2021-06-05 03:39:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:55,262 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5539 transitions. [2021-06-05 03:39:55,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5539 transitions. [2021-06-05 03:39:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:55,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:55,264 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:55,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 03:39:55,265 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:55,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1877252135, now seen corresponding path program 322 times [2021-06-05 03:39:55,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:55,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028149187] [2021-06-05 03:39:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:55,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:55,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028149187] [2021-06-05 03:39:55,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028149187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:55,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:55,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:55,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297675699] [2021-06-05 03:39:55,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:55,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:55,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:55,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:55,351 INFO L87 Difference]: Start difference. First operand 1404 states and 5539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:55,416 INFO L93 Difference]: Finished difference Result 2519 states and 9352 transitions. [2021-06-05 03:39:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:55,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:55,421 INFO L225 Difference]: With dead ends: 2519 [2021-06-05 03:39:55,421 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 03:39:55,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 03:39:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1388. [2021-06-05 03:39:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.953136265320836) internal successors, (5483), 1387 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5483 transitions. [2021-06-05 03:39:55,456 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5483 transitions. Word has length 25 [2021-06-05 03:39:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:55,456 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5483 transitions. [2021-06-05 03:39:55,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5483 transitions. [2021-06-05 03:39:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:55,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:55,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:55,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 03:39:55,458 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1482181819, now seen corresponding path program 323 times [2021-06-05 03:39:55,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:55,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689861027] [2021-06-05 03:39:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:55,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:55,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689861027] [2021-06-05 03:39:55,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689861027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:55,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:55,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:55,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175179841] [2021-06-05 03:39:55,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:55,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:55,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:55,558 INFO L87 Difference]: Start difference. First operand 1388 states and 5483 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:55,622 INFO L93 Difference]: Finished difference Result 2669 states and 9826 transitions. [2021-06-05 03:39:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:55,628 INFO L225 Difference]: With dead ends: 2669 [2021-06-05 03:39:55,628 INFO L226 Difference]: Without dead ends: 2480 [2021-06-05 03:39:55,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-06-05 03:39:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1412. [2021-06-05 03:39:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9397590361445785) internal successors, (5559), 1411 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5559 transitions. [2021-06-05 03:39:55,668 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5559 transitions. Word has length 25 [2021-06-05 03:39:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:55,668 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5559 transitions. [2021-06-05 03:39:55,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5559 transitions. [2021-06-05 03:39:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:55,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:55,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:55,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 03:39:55,670 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash 741229721, now seen corresponding path program 324 times [2021-06-05 03:39:55,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:55,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261601905] [2021-06-05 03:39:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:55,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:55,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261601905] [2021-06-05 03:39:55,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261601905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:55,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:55,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:55,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426346021] [2021-06-05 03:39:55,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:55,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:55,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:55,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:55,769 INFO L87 Difference]: Start difference. First operand 1412 states and 5559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:55,834 INFO L93 Difference]: Finished difference Result 2527 states and 9372 transitions. [2021-06-05 03:39:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:55,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:55,839 INFO L225 Difference]: With dead ends: 2527 [2021-06-05 03:39:55,839 INFO L226 Difference]: Without dead ends: 2320 [2021-06-05 03:39:55,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-06-05 03:39:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1380. [2021-06-05 03:39:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.958665699782451) internal successors, (5459), 1379 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5459 transitions. [2021-06-05 03:39:55,874 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5459 transitions. Word has length 25 [2021-06-05 03:39:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:55,874 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 5459 transitions. [2021-06-05 03:39:55,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5459 transitions. [2021-06-05 03:39:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:55,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:55,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:55,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 03:39:55,876 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:55,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1448213435, now seen corresponding path program 325 times [2021-06-05 03:39:55,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:55,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512645332] [2021-06-05 03:39:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:55,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:55,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512645332] [2021-06-05 03:39:55,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512645332] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:55,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:55,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:55,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003703468] [2021-06-05 03:39:55,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:55,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:55,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:55,957 INFO L87 Difference]: Start difference. First operand 1380 states and 5459 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:56,006 INFO L93 Difference]: Finished difference Result 2633 states and 9704 transitions. [2021-06-05 03:39:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:56,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:56,012 INFO L225 Difference]: With dead ends: 2633 [2021-06-05 03:39:56,012 INFO L226 Difference]: Without dead ends: 2474 [2021-06-05 03:39:56,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-06-05 03:39:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1404. [2021-06-05 03:39:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9508196721311477) internal successors, (5543), 1403 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5543 transitions. [2021-06-05 03:39:56,049 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5543 transitions. Word has length 25 [2021-06-05 03:39:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:56,049 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5543 transitions. [2021-06-05 03:39:56,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5543 transitions. [2021-06-05 03:39:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:56,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:56,051 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:56,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 03:39:56,052 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:56,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1166257221, now seen corresponding path program 326 times [2021-06-05 03:39:56,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:56,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045816626] [2021-06-05 03:39:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:56,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:56,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045816626] [2021-06-05 03:39:56,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045816626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:56,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:56,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:56,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525128788] [2021-06-05 03:39:56,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:56,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:56,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:56,139 INFO L87 Difference]: Start difference. First operand 1404 states and 5543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:56,205 INFO L93 Difference]: Finished difference Result 2657 states and 9780 transitions. [2021-06-05 03:39:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:56,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:56,210 INFO L225 Difference]: With dead ends: 2657 [2021-06-05 03:39:56,210 INFO L226 Difference]: Without dead ends: 2458 [2021-06-05 03:39:56,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-06-05 03:39:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1388. [2021-06-05 03:39:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9560201874549388) internal successors, (5487), 1387 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5487 transitions. [2021-06-05 03:39:56,247 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5487 transitions. Word has length 25 [2021-06-05 03:39:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:56,247 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5487 transitions. [2021-06-05 03:39:56,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5487 transitions. [2021-06-05 03:39:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:56,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:56,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:56,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 03:39:56,249 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash 601416473, now seen corresponding path program 327 times [2021-06-05 03:39:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:56,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663181079] [2021-06-05 03:39:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:56,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:56,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663181079] [2021-06-05 03:39:56,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663181079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:56,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:56,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:56,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808095134] [2021-06-05 03:39:56,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:56,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:56,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:56,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:56,330 INFO L87 Difference]: Start difference. First operand 1388 states and 5487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:56,384 INFO L93 Difference]: Finished difference Result 2577 states and 9492 transitions. [2021-06-05 03:39:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:56,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:56,389 INFO L225 Difference]: With dead ends: 2577 [2021-06-05 03:39:56,389 INFO L226 Difference]: Without dead ends: 2418 [2021-06-05 03:39:56,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-06-05 03:39:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1404. [2021-06-05 03:39:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9451176051318604) internal successors, (5535), 1403 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5535 transitions. [2021-06-05 03:39:56,425 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5535 transitions. Word has length 25 [2021-06-05 03:39:56,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:56,425 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5535 transitions. [2021-06-05 03:39:56,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5535 transitions. [2021-06-05 03:39:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:56,427 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:56,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:56,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 03:39:56,427 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:56,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1243755451, now seen corresponding path program 328 times [2021-06-05 03:39:56,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:56,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690074364] [2021-06-05 03:39:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:56,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:56,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690074364] [2021-06-05 03:39:56,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690074364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:56,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:56,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:56,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898454617] [2021-06-05 03:39:56,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:56,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:56,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:56,519 INFO L87 Difference]: Start difference. First operand 1404 states and 5535 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:56,579 INFO L93 Difference]: Finished difference Result 2465 states and 9155 transitions. [2021-06-05 03:39:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:56,584 INFO L225 Difference]: With dead ends: 2465 [2021-06-05 03:39:56,584 INFO L226 Difference]: Without dead ends: 2274 [2021-06-05 03:39:56,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-06-05 03:39:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1388. [2021-06-05 03:39:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.950252343186734) internal successors, (5479), 1387 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5479 transitions. [2021-06-05 03:39:56,619 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5479 transitions. Word has length 25 [2021-06-05 03:39:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:56,619 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5479 transitions. [2021-06-05 03:39:56,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5479 transitions. [2021-06-05 03:39:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:56,621 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:56,621 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:56,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 03:39:56,621 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:56,621 INFO L82 PathProgramCache]: Analyzing trace with hash 621124539, now seen corresponding path program 329 times [2021-06-05 03:39:56,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:56,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360730485] [2021-06-05 03:39:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:56,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:56,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360730485] [2021-06-05 03:39:56,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360730485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:56,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:56,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:56,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715954447] [2021-06-05 03:39:56,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:56,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:56,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:56,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:56,696 INFO L87 Difference]: Start difference. First operand 1388 states and 5479 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:56,762 INFO L93 Difference]: Finished difference Result 2481 states and 9227 transitions. [2021-06-05 03:39:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:56,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:56,767 INFO L225 Difference]: With dead ends: 2481 [2021-06-05 03:39:56,767 INFO L226 Difference]: Without dead ends: 2298 [2021-06-05 03:39:56,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-06-05 03:39:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1412. [2021-06-05 03:39:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9369241672572644) internal successors, (5555), 1411 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5555 transitions. [2021-06-05 03:39:56,802 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5555 transitions. Word has length 25 [2021-06-05 03:39:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:56,802 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5555 transitions. [2021-06-05 03:39:56,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5555 transitions. [2021-06-05 03:39:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:56,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:56,804 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:56,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 03:39:56,804 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1422212455, now seen corresponding path program 330 times [2021-06-05 03:39:56,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:56,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129195855] [2021-06-05 03:39:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:56,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:56,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129195855] [2021-06-05 03:39:56,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129195855] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:56,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:56,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:56,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886098728] [2021-06-05 03:39:56,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:56,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:56,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:56,897 INFO L87 Difference]: Start difference. First operand 1412 states and 5555 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:56,969 INFO L93 Difference]: Finished difference Result 2297 states and 8614 transitions. [2021-06-05 03:39:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:56,973 INFO L225 Difference]: With dead ends: 2297 [2021-06-05 03:39:56,973 INFO L226 Difference]: Without dead ends: 2090 [2021-06-05 03:39:56,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-06-05 03:39:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1380. [2021-06-05 03:39:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.9557650471356056) internal successors, (5455), 1379 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5455 transitions. [2021-06-05 03:39:57,007 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5455 transitions. Word has length 25 [2021-06-05 03:39:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:57,007 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 5455 transitions. [2021-06-05 03:39:57,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5455 transitions. [2021-06-05 03:39:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:57,008 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:57,009 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:57,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 03:39:57,009 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:57,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:57,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2122649571, now seen corresponding path program 331 times [2021-06-05 03:39:57,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:57,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344368762] [2021-06-05 03:39:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:57,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:57,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344368762] [2021-06-05 03:39:57,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344368762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:57,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:57,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:57,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633621046] [2021-06-05 03:39:57,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:57,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:57,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:57,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:57,083 INFO L87 Difference]: Start difference. First operand 1380 states and 5455 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:57,143 INFO L93 Difference]: Finished difference Result 2717 states and 10026 transitions. [2021-06-05 03:39:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:57,148 INFO L225 Difference]: With dead ends: 2717 [2021-06-05 03:39:57,148 INFO L226 Difference]: Without dead ends: 2528 [2021-06-05 03:39:57,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-06-05 03:39:57,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1420. [2021-06-05 03:39:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.945736434108527) internal successors, (5599), 1419 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5599 transitions. [2021-06-05 03:39:57,185 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5599 transitions. Word has length 25 [2021-06-05 03:39:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:57,185 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5599 transitions. [2021-06-05 03:39:57,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5599 transitions. [2021-06-05 03:39:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:57,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:57,187 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:57,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 03:39:57,187 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:57,187 INFO L82 PathProgramCache]: Analyzing trace with hash 780173179, now seen corresponding path program 332 times [2021-06-05 03:39:57,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:57,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760754308] [2021-06-05 03:39:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:57,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:57,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760754308] [2021-06-05 03:39:57,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760754308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:57,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:57,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:57,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514436825] [2021-06-05 03:39:57,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:57,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:57,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:57,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:57,267 INFO L87 Difference]: Start difference. First operand 1420 states and 5599 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:57,326 INFO L93 Difference]: Finished difference Result 2711 states and 9981 transitions. [2021-06-05 03:39:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:57,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:57,331 INFO L225 Difference]: With dead ends: 2711 [2021-06-05 03:39:57,331 INFO L226 Difference]: Without dead ends: 2500 [2021-06-05 03:39:57,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-06-05 03:39:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1392. [2021-06-05 03:39:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.953271028037383) internal successors, (5499), 1391 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5499 transitions. [2021-06-05 03:39:57,367 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5499 transitions. Word has length 25 [2021-06-05 03:39:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:57,367 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5499 transitions. [2021-06-05 03:39:57,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5499 transitions. [2021-06-05 03:39:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:57,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:57,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:57,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 03:39:57,369 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:57,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1325520763, now seen corresponding path program 333 times [2021-06-05 03:39:57,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:57,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033901225] [2021-06-05 03:39:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:57,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:57,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033901225] [2021-06-05 03:39:57,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033901225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:57,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:57,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:57,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031986789] [2021-06-05 03:39:57,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:57,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:57,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:57,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:57,456 INFO L87 Difference]: Start difference. First operand 1392 states and 5499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:57,518 INFO L93 Difference]: Finished difference Result 2619 states and 9649 transitions. [2021-06-05 03:39:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:57,522 INFO L225 Difference]: With dead ends: 2619 [2021-06-05 03:39:57,523 INFO L226 Difference]: Without dead ends: 2430 [2021-06-05 03:39:57,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-06-05 03:39:57,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1416. [2021-06-05 03:39:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.939929328621908) internal successors, (5575), 1415 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5575 transitions. [2021-06-05 03:39:57,558 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5575 transitions. Word has length 25 [2021-06-05 03:39:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:57,559 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5575 transitions. [2021-06-05 03:39:57,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5575 transitions. [2021-06-05 03:39:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:57,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:57,561 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:57,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 03:39:57,561 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:57,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1125787653, now seen corresponding path program 334 times [2021-06-05 03:39:57,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:57,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377857263] [2021-06-05 03:39:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:57,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:57,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377857263] [2021-06-05 03:39:57,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377857263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:57,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:57,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:57,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604400847] [2021-06-05 03:39:57,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:57,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:57,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:57,647 INFO L87 Difference]: Start difference. First operand 1416 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:57,710 INFO L93 Difference]: Finished difference Result 2477 states and 9195 transitions. [2021-06-05 03:39:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:57,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:57,715 INFO L225 Difference]: With dead ends: 2477 [2021-06-05 03:39:57,715 INFO L226 Difference]: Without dead ends: 2278 [2021-06-05 03:39:57,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2021-06-05 03:39:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1392. [2021-06-05 03:39:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9446441409058233) internal successors, (5487), 1391 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5487 transitions. [2021-06-05 03:39:57,749 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5487 transitions. Word has length 25 [2021-06-05 03:39:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:57,749 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5487 transitions. [2021-06-05 03:39:57,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5487 transitions. [2021-06-05 03:39:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:57,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:57,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:57,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 03:39:57,751 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1689778137, now seen corresponding path program 335 times [2021-06-05 03:39:57,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:57,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017262638] [2021-06-05 03:39:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:57,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:57,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017262638] [2021-06-05 03:39:57,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017262638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:57,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:57,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:57,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912649464] [2021-06-05 03:39:57,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:57,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:57,828 INFO L87 Difference]: Start difference. First operand 1392 states and 5487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:57,898 INFO L93 Difference]: Finished difference Result 2485 states and 9235 transitions. [2021-06-05 03:39:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:57,903 INFO L225 Difference]: With dead ends: 2485 [2021-06-05 03:39:57,903 INFO L226 Difference]: Without dead ends: 2302 [2021-06-05 03:39:57,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:57,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-06-05 03:39:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1416. [2021-06-05 03:39:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.9314487632508834) internal successors, (5563), 1415 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5563 transitions. [2021-06-05 03:39:57,938 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5563 transitions. Word has length 25 [2021-06-05 03:39:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:57,938 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5563 transitions. [2021-06-05 03:39:57,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5563 transitions. [2021-06-05 03:39:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:57,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:57,940 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:57,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 03:39:57,940 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:57,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1524126533, now seen corresponding path program 336 times [2021-06-05 03:39:57,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:57,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893670778] [2021-06-05 03:39:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:58,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:58,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893670778] [2021-06-05 03:39:58,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893670778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:58,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:58,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:58,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978966470] [2021-06-05 03:39:58,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:58,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:58,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:58,025 INFO L87 Difference]: Start difference. First operand 1416 states and 5563 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:58,096 INFO L93 Difference]: Finished difference Result 2301 states and 8622 transitions. [2021-06-05 03:39:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:58,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:58,100 INFO L225 Difference]: With dead ends: 2301 [2021-06-05 03:39:58,100 INFO L226 Difference]: Without dead ends: 2086 [2021-06-05 03:39:58,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2021-06-05 03:39:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1376. [2021-06-05 03:39:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.96) internal successors, (5445), 1375 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5445 transitions. [2021-06-05 03:39:58,133 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5445 transitions. Word has length 25 [2021-06-05 03:39:58,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:58,133 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 5445 transitions. [2021-06-05 03:39:58,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5445 transitions. [2021-06-05 03:39:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:58,135 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:58,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:58,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 03:39:58,135 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash 203920639, now seen corresponding path program 337 times [2021-06-05 03:39:58,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:58,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780381468] [2021-06-05 03:39:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:58,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:58,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780381468] [2021-06-05 03:39:58,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780381468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:58,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:58,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:58,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852918502] [2021-06-05 03:39:58,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:58,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:58,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:58,233 INFO L87 Difference]: Start difference. First operand 1376 states and 5445 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:58,309 INFO L93 Difference]: Finished difference Result 3065 states and 11402 transitions. [2021-06-05 03:39:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:58,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:58,315 INFO L225 Difference]: With dead ends: 3065 [2021-06-05 03:39:58,315 INFO L226 Difference]: Without dead ends: 2876 [2021-06-05 03:39:58,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2021-06-05 03:39:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1430. [2021-06-05 03:39:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 3.9580125962211334) internal successors, (5656), 1429 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5656 transitions. [2021-06-05 03:39:58,354 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5656 transitions. Word has length 25 [2021-06-05 03:39:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:58,354 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 5656 transitions. [2021-06-05 03:39:58,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5656 transitions. [2021-06-05 03:39:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:58,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:58,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:58,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 03:39:58,356 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:58,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1188223907, now seen corresponding path program 338 times [2021-06-05 03:39:58,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:58,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516925102] [2021-06-05 03:39:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:58,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:58,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516925102] [2021-06-05 03:39:58,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516925102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:58,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:58,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:58,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738477301] [2021-06-05 03:39:58,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:58,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:58,436 INFO L87 Difference]: Start difference. First operand 1430 states and 5656 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:58,500 INFO L93 Difference]: Finished difference Result 3059 states and 11357 transitions. [2021-06-05 03:39:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:58,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:58,506 INFO L225 Difference]: With dead ends: 3059 [2021-06-05 03:39:58,506 INFO L226 Difference]: Without dead ends: 2848 [2021-06-05 03:39:58,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-06-05 03:39:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1402. [2021-06-05 03:39:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9657387580299788) internal successors, (5556), 1401 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5556 transitions. [2021-06-05 03:39:58,545 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5556 transitions. Word has length 25 [2021-06-05 03:39:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:58,545 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5556 transitions. [2021-06-05 03:39:58,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5556 transitions. [2021-06-05 03:39:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:58,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:58,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:58,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 03:39:58,547 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash -642876323, now seen corresponding path program 339 times [2021-06-05 03:39:58,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:58,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112418741] [2021-06-05 03:39:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:58,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:58,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112418741] [2021-06-05 03:39:58,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112418741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:58,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:58,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:58,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269424718] [2021-06-05 03:39:58,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:58,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:58,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:58,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:58,635 INFO L87 Difference]: Start difference. First operand 1402 states and 5556 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:58,703 INFO L93 Difference]: Finished difference Result 3053 states and 11346 transitions. [2021-06-05 03:39:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:58,709 INFO L225 Difference]: With dead ends: 3053 [2021-06-05 03:39:58,709 INFO L226 Difference]: Without dead ends: 2864 [2021-06-05 03:39:58,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-06-05 03:39:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1426. [2021-06-05 03:39:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.952280701754386) internal successors, (5632), 1425 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5632 transitions. [2021-06-05 03:39:58,748 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5632 transitions. Word has length 25 [2021-06-05 03:39:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:58,748 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 5632 transitions. [2021-06-05 03:39:58,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5632 transitions. [2021-06-05 03:39:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:58,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:58,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:58,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 03:39:58,750 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1200782557, now seen corresponding path program 340 times [2021-06-05 03:39:58,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:58,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183189635] [2021-06-05 03:39:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:58,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:58,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183189635] [2021-06-05 03:39:58,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183189635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:58,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:58,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:58,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787155311] [2021-06-05 03:39:58,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:58,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:58,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:58,850 INFO L87 Difference]: Start difference. First operand 1426 states and 5632 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:58,920 INFO L93 Difference]: Finished difference Result 3039 states and 11277 transitions. [2021-06-05 03:39:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:58,926 INFO L225 Difference]: With dead ends: 3039 [2021-06-05 03:39:58,926 INFO L226 Difference]: Without dead ends: 2840 [2021-06-05 03:39:58,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-06-05 03:39:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1402. [2021-06-05 03:39:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9571734475374734) internal successors, (5544), 1401 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5544 transitions. [2021-06-05 03:39:58,982 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5544 transitions. Word has length 25 [2021-06-05 03:39:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:58,982 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5544 transitions. [2021-06-05 03:39:58,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5544 transitions. [2021-06-05 03:39:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:58,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:58,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:58,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 03:39:58,984 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash -278618949, now seen corresponding path program 341 times [2021-06-05 03:39:58,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:58,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126722742] [2021-06-05 03:39:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:59,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:59,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126722742] [2021-06-05 03:39:59,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126722742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:59,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:59,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:59,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569601413] [2021-06-05 03:39:59,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:59,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:59,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:59,075 INFO L87 Difference]: Start difference. First operand 1402 states and 5544 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:59,165 INFO L93 Difference]: Finished difference Result 3041 states and 11300 transitions. [2021-06-05 03:39:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:59,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:59,170 INFO L225 Difference]: With dead ends: 3041 [2021-06-05 03:39:59,171 INFO L226 Difference]: Without dead ends: 2858 [2021-06-05 03:39:59,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-06-05 03:39:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 1426. [2021-06-05 03:39:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.943859649122807) internal successors, (5620), 1425 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5620 transitions. [2021-06-05 03:39:59,210 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5620 transitions. Word has length 25 [2021-06-05 03:39:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:59,210 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 5620 transitions. [2021-06-05 03:39:59,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5620 transitions. [2021-06-05 03:39:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:59,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:59,212 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:59,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 03:39:59,212 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:59,212 INFO L82 PathProgramCache]: Analyzing trace with hash 802443677, now seen corresponding path program 342 times [2021-06-05 03:39:59,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:59,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254373934] [2021-06-05 03:39:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:59,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:59,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254373934] [2021-06-05 03:39:59,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254373934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:59,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:59,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:59,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141348782] [2021-06-05 03:39:59,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:59,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:59,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:59,300 INFO L87 Difference]: Start difference. First operand 1426 states and 5620 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:59,371 INFO L93 Difference]: Finished difference Result 3033 states and 11248 transitions. [2021-06-05 03:39:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:59,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:59,377 INFO L225 Difference]: With dead ends: 3033 [2021-06-05 03:39:59,377 INFO L226 Difference]: Without dead ends: 2822 [2021-06-05 03:39:59,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-06-05 03:39:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1390. [2021-06-05 03:39:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9640028797696183) internal successors, (5506), 1389 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5506 transitions. [2021-06-05 03:39:59,415 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5506 transitions. Word has length 25 [2021-06-05 03:39:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:59,416 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5506 transitions. [2021-06-05 03:39:59,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5506 transitions. [2021-06-05 03:39:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:59,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:59,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:59,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 03:39:59,418 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1759434275, now seen corresponding path program 343 times [2021-06-05 03:39:59,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:59,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778934977] [2021-06-05 03:39:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:59,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:59,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778934977] [2021-06-05 03:39:59,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778934977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:59,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:59,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:59,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614350994] [2021-06-05 03:39:59,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:59,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:59,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:59,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:59,493 INFO L87 Difference]: Start difference. First operand 1390 states and 5506 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:59,563 INFO L93 Difference]: Finished difference Result 3096 states and 11479 transitions. [2021-06-05 03:39:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:59,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:59,569 INFO L225 Difference]: With dead ends: 3096 [2021-06-05 03:39:59,569 INFO L226 Difference]: Without dead ends: 2907 [2021-06-05 03:39:59,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2021-06-05 03:39:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1448. [2021-06-05 03:39:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9550794747753972) internal successors, (5723), 1447 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5723 transitions. [2021-06-05 03:39:59,608 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5723 transitions. Word has length 25 [2021-06-05 03:39:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:59,608 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5723 transitions. [2021-06-05 03:39:59,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5723 transitions. [2021-06-05 03:39:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:59,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:59,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:59,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 03:39:59,610 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:59,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1143388475, now seen corresponding path program 344 times [2021-06-05 03:39:59,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:59,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293127225] [2021-06-05 03:39:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:59,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:59,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293127225] [2021-06-05 03:39:59,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293127225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:59,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:59,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:59,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634168313] [2021-06-05 03:39:59,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:59,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:59,700 INFO L87 Difference]: Start difference. First operand 1448 states and 5723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:59,770 INFO L93 Difference]: Finished difference Result 3090 states and 11434 transitions. [2021-06-05 03:39:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:59,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:59,775 INFO L225 Difference]: With dead ends: 3090 [2021-06-05 03:39:59,775 INFO L226 Difference]: Without dead ends: 2879 [2021-06-05 03:39:59,776 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:39:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-06-05 03:39:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1420. [2021-06-05 03:39:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9612403100775193) internal successors, (5621), 1419 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5621 transitions. [2021-06-05 03:39:59,814 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5621 transitions. Word has length 25 [2021-06-05 03:39:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:39:59,814 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5621 transitions. [2021-06-05 03:39:59,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5621 transitions. [2021-06-05 03:39:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:39:59,816 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:39:59,816 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:39:59,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 03:39:59,816 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:39:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:39:59,816 INFO L82 PathProgramCache]: Analyzing trace with hash 628646365, now seen corresponding path program 345 times [2021-06-05 03:39:59,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:39:59,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107017345] [2021-06-05 03:39:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:39:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:39:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:39:59,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:39:59,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107017345] [2021-06-05 03:39:59,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107017345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:39:59,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:39:59,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:39:59,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473205123] [2021-06-05 03:39:59,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:39:59,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:39:59,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:39:59,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:39:59,915 INFO L87 Difference]: Start difference. First operand 1420 states and 5621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:39:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:39:59,979 INFO L93 Difference]: Finished difference Result 3170 states and 11718 transitions. [2021-06-05 03:39:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:39:59,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:39:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:39:59,985 INFO L225 Difference]: With dead ends: 3170 [2021-06-05 03:39:59,985 INFO L226 Difference]: Without dead ends: 2981 [2021-06-05 03:39:59,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-06-05 03:40:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1483. [2021-06-05 03:40:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1482 states have (on average 3.932523616734143) internal successors, (5828), 1482 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 5828 transitions. [2021-06-05 03:40:00,026 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 5828 transitions. Word has length 25 [2021-06-05 03:40:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:00,026 INFO L482 AbstractCegarLoop]: Abstraction has 1483 states and 5828 transitions. [2021-06-05 03:40:00,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 5828 transitions. [2021-06-05 03:40:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:00,028 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:00,028 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:00,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 03:40:00,028 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1360728669, now seen corresponding path program 346 times [2021-06-05 03:40:00,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:00,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528672278] [2021-06-05 03:40:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:00,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:00,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528672278] [2021-06-05 03:40:00,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528672278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:00,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:00,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:00,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536629320] [2021-06-05 03:40:00,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:00,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:00,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:00,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:00,107 INFO L87 Difference]: Start difference. First operand 1483 states and 5828 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:00,157 INFO L93 Difference]: Finished difference Result 3203 states and 11801 transitions. [2021-06-05 03:40:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:00,163 INFO L225 Difference]: With dead ends: 3203 [2021-06-05 03:40:00,163 INFO L226 Difference]: Without dead ends: 2918 [2021-06-05 03:40:00,163 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2021-06-05 03:40:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1420. [2021-06-05 03:40:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9400986610288937) internal successors, (5591), 1419 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5591 transitions. [2021-06-05 03:40:00,202 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5591 transitions. Word has length 25 [2021-06-05 03:40:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:00,202 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5591 transitions. [2021-06-05 03:40:00,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5591 transitions. [2021-06-05 03:40:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:00,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:00,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:00,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 03:40:00,204 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:00,204 INFO L82 PathProgramCache]: Analyzing trace with hash 992903739, now seen corresponding path program 347 times [2021-06-05 03:40:00,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:00,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057467669] [2021-06-05 03:40:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:00,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:00,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057467669] [2021-06-05 03:40:00,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057467669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:00,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:00,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:00,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523587983] [2021-06-05 03:40:00,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:00,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:00,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:00,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:00,289 INFO L87 Difference]: Start difference. First operand 1420 states and 5591 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:00,347 INFO L93 Difference]: Finished difference Result 3139 states and 11596 transitions. [2021-06-05 03:40:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:00,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:00,353 INFO L225 Difference]: With dead ends: 3139 [2021-06-05 03:40:00,353 INFO L226 Difference]: Without dead ends: 2956 [2021-06-05 03:40:00,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:00,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-06-05 03:40:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1464. [2021-06-05 03:40:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9254955570745045) internal successors, (5743), 1463 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5743 transitions. [2021-06-05 03:40:00,392 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5743 transitions. Word has length 25 [2021-06-05 03:40:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:00,392 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5743 transitions. [2021-06-05 03:40:00,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5743 transitions. [2021-06-05 03:40:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:00,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:00,394 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:00,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 03:40:00,394 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:00,395 INFO L82 PathProgramCache]: Analyzing trace with hash -76615267, now seen corresponding path program 348 times [2021-06-05 03:40:00,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:00,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916660417] [2021-06-05 03:40:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:00,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:00,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916660417] [2021-06-05 03:40:00,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916660417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:00,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:00,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:00,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931872481] [2021-06-05 03:40:00,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:00,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:00,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:00,480 INFO L87 Difference]: Start difference. First operand 1464 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:00,527 INFO L93 Difference]: Finished difference Result 3178 states and 11699 transitions. [2021-06-05 03:40:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:00,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:00,533 INFO L225 Difference]: With dead ends: 3178 [2021-06-05 03:40:00,533 INFO L226 Difference]: Without dead ends: 2882 [2021-06-05 03:40:00,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-06-05 03:40:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1390. [2021-06-05 03:40:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9539236861051115) internal successors, (5492), 1389 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5492 transitions. [2021-06-05 03:40:00,572 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5492 transitions. Word has length 25 [2021-06-05 03:40:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:00,572 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5492 transitions. [2021-06-05 03:40:00,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5492 transitions. [2021-06-05 03:40:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:00,574 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:00,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:00,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 03:40:00,574 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:00,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1678784955, now seen corresponding path program 349 times [2021-06-05 03:40:00,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:00,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808033663] [2021-06-05 03:40:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:00,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:00,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808033663] [2021-06-05 03:40:00,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808033663] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:00,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:00,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:00,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393825722] [2021-06-05 03:40:00,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:00,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:00,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:00,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:00,670 INFO L87 Difference]: Start difference. First operand 1390 states and 5492 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:00,730 INFO L93 Difference]: Finished difference Result 3038 states and 11232 transitions. [2021-06-05 03:40:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:00,736 INFO L225 Difference]: With dead ends: 3038 [2021-06-05 03:40:00,736 INFO L226 Difference]: Without dead ends: 2849 [2021-06-05 03:40:00,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2021-06-05 03:40:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1442. [2021-06-05 03:40:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 3.947258848022207) internal successors, (5688), 1441 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 5688 transitions. [2021-06-05 03:40:00,775 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 5688 transitions. Word has length 25 [2021-06-05 03:40:00,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:00,775 INFO L482 AbstractCegarLoop]: Abstraction has 1442 states and 5688 transitions. [2021-06-05 03:40:00,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 5688 transitions. [2021-06-05 03:40:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:00,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:00,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:00,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 03:40:00,777 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:00,777 INFO L82 PathProgramCache]: Analyzing trace with hash -772523461, now seen corresponding path program 350 times [2021-06-05 03:40:00,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:00,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734311628] [2021-06-05 03:40:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:00,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:00,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734311628] [2021-06-05 03:40:00,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734311628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:00,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:00,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:00,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517605928] [2021-06-05 03:40:00,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:00,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:00,878 INFO L87 Difference]: Start difference. First operand 1442 states and 5688 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:00,941 INFO L93 Difference]: Finished difference Result 3024 states and 11163 transitions. [2021-06-05 03:40:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:00,947 INFO L225 Difference]: With dead ends: 3024 [2021-06-05 03:40:00,947 INFO L226 Difference]: Without dead ends: 2825 [2021-06-05 03:40:00,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:00,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-06-05 03:40:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1418. [2021-06-05 03:40:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.952011291460833) internal successors, (5600), 1417 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5600 transitions. [2021-06-05 03:40:00,986 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5600 transitions. Word has length 25 [2021-06-05 03:40:00,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:00,986 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5600 transitions. [2021-06-05 03:40:00,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5600 transitions. [2021-06-05 03:40:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:00,988 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:00,988 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:00,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 03:40:00,988 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:00,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:00,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1061261597, now seen corresponding path program 351 times [2021-06-05 03:40:00,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:00,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671122807] [2021-06-05 03:40:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:01,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:01,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671122807] [2021-06-05 03:40:01,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671122807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:01,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:01,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:01,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13453819] [2021-06-05 03:40:01,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:01,074 INFO L87 Difference]: Start difference. First operand 1418 states and 5600 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:01,134 INFO L93 Difference]: Finished difference Result 3061 states and 11279 transitions. [2021-06-05 03:40:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:01,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:01,140 INFO L225 Difference]: With dead ends: 3061 [2021-06-05 03:40:01,140 INFO L226 Difference]: Without dead ends: 2872 [2021-06-05 03:40:01,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2021-06-05 03:40:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1481. [2021-06-05 03:40:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.9236486486486486) internal successors, (5807), 1480 states have internal predecessors, (5807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5807 transitions. [2021-06-05 03:40:01,181 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5807 transitions. Word has length 25 [2021-06-05 03:40:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:01,181 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5807 transitions. [2021-06-05 03:40:01,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5807 transitions. [2021-06-05 03:40:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:01,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:01,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:01,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 03:40:01,183 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:01,183 INFO L82 PathProgramCache]: Analyzing trace with hash -662332869, now seen corresponding path program 352 times [2021-06-05 03:40:01,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:01,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756297461] [2021-06-05 03:40:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:01,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:01,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756297461] [2021-06-05 03:40:01,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756297461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:01,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:01,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:01,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042993316] [2021-06-05 03:40:01,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:01,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:01,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:01,271 INFO L87 Difference]: Start difference. First operand 1481 states and 5807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:01,320 INFO L93 Difference]: Finished difference Result 3094 states and 11362 transitions. [2021-06-05 03:40:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:01,326 INFO L225 Difference]: With dead ends: 3094 [2021-06-05 03:40:01,326 INFO L226 Difference]: Without dead ends: 2809 [2021-06-05 03:40:01,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2021-06-05 03:40:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 1418. [2021-06-05 03:40:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.9322512350035286) internal successors, (5572), 1417 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5572 transitions. [2021-06-05 03:40:01,365 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5572 transitions. Word has length 25 [2021-06-05 03:40:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:01,365 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5572 transitions. [2021-06-05 03:40:01,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5572 transitions. [2021-06-05 03:40:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:01,367 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:01,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:01,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 03:40:01,367 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1616065861, now seen corresponding path program 353 times [2021-06-05 03:40:01,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:01,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878723570] [2021-06-05 03:40:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:01,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:01,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878723570] [2021-06-05 03:40:01,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878723570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:01,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:01,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:01,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300654059] [2021-06-05 03:40:01,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:01,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:01,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:01,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:01,485 INFO L87 Difference]: Start difference. First operand 1418 states and 5572 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:01,544 INFO L93 Difference]: Finished difference Result 3010 states and 11087 transitions. [2021-06-05 03:40:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:01,550 INFO L225 Difference]: With dead ends: 3010 [2021-06-05 03:40:01,550 INFO L226 Difference]: Without dead ends: 2835 [2021-06-05 03:40:01,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-06-05 03:40:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1458. [2021-06-05 03:40:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9203843514070007) internal successors, (5712), 1457 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5712 transitions. [2021-06-05 03:40:01,589 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5712 transitions. Word has length 25 [2021-06-05 03:40:01,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:01,589 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5712 transitions. [2021-06-05 03:40:01,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5712 transitions. [2021-06-05 03:40:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:01,591 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:01,591 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:01,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 03:40:01,591 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1397714275, now seen corresponding path program 354 times [2021-06-05 03:40:01,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:01,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435899489] [2021-06-05 03:40:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:01,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:01,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435899489] [2021-06-05 03:40:01,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435899489] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:01,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:01,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:01,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674310661] [2021-06-05 03:40:01,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:01,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:01,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:01,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:01,685 INFO L87 Difference]: Start difference. First operand 1458 states and 5712 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:01,733 INFO L93 Difference]: Finished difference Result 2962 states and 10887 transitions. [2021-06-05 03:40:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:01,738 INFO L225 Difference]: With dead ends: 2962 [2021-06-05 03:40:01,739 INFO L226 Difference]: Without dead ends: 2672 [2021-06-05 03:40:01,739 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-06-05 03:40:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1390. [2021-06-05 03:40:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9438444924406046) internal successors, (5478), 1389 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5478 transitions. [2021-06-05 03:40:01,776 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5478 transitions. Word has length 25 [2021-06-05 03:40:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:01,776 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5478 transitions. [2021-06-05 03:40:01,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5478 transitions. [2021-06-05 03:40:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:01,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:01,778 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:01,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 03:40:01,778 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:01,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2023140121, now seen corresponding path program 355 times [2021-06-05 03:40:01,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:01,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333982574] [2021-06-05 03:40:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:01,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:01,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333982574] [2021-06-05 03:40:01,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333982574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:01,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:01,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:01,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865734682] [2021-06-05 03:40:01,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:01,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:01,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:01,861 INFO L87 Difference]: Start difference. First operand 1390 states and 5478 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:01,921 INFO L93 Difference]: Finished difference Result 2993 states and 11081 transitions. [2021-06-05 03:40:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:01,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:01,926 INFO L225 Difference]: With dead ends: 2993 [2021-06-05 03:40:01,926 INFO L226 Difference]: Without dead ends: 2810 [2021-06-05 03:40:01,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-06-05 03:40:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1434. [2021-06-05 03:40:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 3.939986043265876) internal successors, (5646), 1433 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 5646 transitions. [2021-06-05 03:40:01,965 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 5646 transitions. Word has length 25 [2021-06-05 03:40:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:01,965 INFO L482 AbstractCegarLoop]: Abstraction has 1434 states and 5646 transitions. [2021-06-05 03:40:01,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 5646 transitions. [2021-06-05 03:40:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:01,967 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:01,967 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:01,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 03:40:01,967 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1190764549, now seen corresponding path program 356 times [2021-06-05 03:40:01,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:01,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913227484] [2021-06-05 03:40:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:02,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:02,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913227484] [2021-06-05 03:40:02,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913227484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:02,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:02,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:02,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441254497] [2021-06-05 03:40:02,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:02,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:02,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:02,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:02,050 INFO L87 Difference]: Start difference. First operand 1434 states and 5646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:02,109 INFO L93 Difference]: Finished difference Result 2985 states and 11029 transitions. [2021-06-05 03:40:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:02,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:02,115 INFO L225 Difference]: With dead ends: 2985 [2021-06-05 03:40:02,115 INFO L226 Difference]: Without dead ends: 2786 [2021-06-05 03:40:02,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-06-05 03:40:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1410. [2021-06-05 03:40:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.944641589779986) internal successors, (5558), 1409 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5558 transitions. [2021-06-05 03:40:02,154 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5558 transitions. Word has length 25 [2021-06-05 03:40:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:02,154 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 5558 transitions. [2021-06-05 03:40:02,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5558 transitions. [2021-06-05 03:40:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:02,155 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:02,156 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:02,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 03:40:02,156 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1405616763, now seen corresponding path program 357 times [2021-06-05 03:40:02,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:02,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627720333] [2021-06-05 03:40:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:02,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:02,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627720333] [2021-06-05 03:40:02,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627720333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:02,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:02,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:02,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412034948] [2021-06-05 03:40:02,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:02,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:02,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:02,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:02,250 INFO L87 Difference]: Start difference. First operand 1410 states and 5558 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:02,320 INFO L93 Difference]: Finished difference Result 2921 states and 10793 transitions. [2021-06-05 03:40:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:02,325 INFO L225 Difference]: With dead ends: 2921 [2021-06-05 03:40:02,326 INFO L226 Difference]: Without dead ends: 2738 [2021-06-05 03:40:02,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-06-05 03:40:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1454. [2021-06-05 03:40:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.9298004129387474) internal successors, (5710), 1453 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5710 transitions. [2021-06-05 03:40:02,365 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5710 transitions. Word has length 25 [2021-06-05 03:40:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:02,366 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 5710 transitions. [2021-06-05 03:40:02,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5710 transitions. [2021-06-05 03:40:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:02,367 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:02,368 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:02,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 03:40:02,368 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:02,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2119579013, now seen corresponding path program 358 times [2021-06-05 03:40:02,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:02,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882101706] [2021-06-05 03:40:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:02,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:02,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882101706] [2021-06-05 03:40:02,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882101706] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:02,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:02,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:02,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101878443] [2021-06-05 03:40:02,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:02,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:02,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:02,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:02,464 INFO L87 Difference]: Start difference. First operand 1454 states and 5710 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:02,532 INFO L93 Difference]: Finished difference Result 2960 states and 10896 transitions. [2021-06-05 03:40:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:02,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:02,538 INFO L225 Difference]: With dead ends: 2960 [2021-06-05 03:40:02,538 INFO L226 Difference]: Without dead ends: 2694 [2021-06-05 03:40:02,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-06-05 03:40:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1410. [2021-06-05 03:40:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.930447125621008) internal successors, (5538), 1409 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5538 transitions. [2021-06-05 03:40:02,576 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5538 transitions. Word has length 25 [2021-06-05 03:40:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:02,576 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 5538 transitions. [2021-06-05 03:40:02,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5538 transitions. [2021-06-05 03:40:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:02,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:02,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:02,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 03:40:02,578 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1793621725, now seen corresponding path program 359 times [2021-06-05 03:40:02,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:02,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041088434] [2021-06-05 03:40:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:02,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:02,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041088434] [2021-06-05 03:40:02,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041088434] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:02,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:02,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:02,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347854259] [2021-06-05 03:40:02,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:02,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:02,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:02,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:02,678 INFO L87 Difference]: Start difference. First operand 1410 states and 5538 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:02,740 INFO L93 Difference]: Finished difference Result 2861 states and 10537 transitions. [2021-06-05 03:40:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:02,746 INFO L225 Difference]: With dead ends: 2861 [2021-06-05 03:40:02,746 INFO L226 Difference]: Without dead ends: 2686 [2021-06-05 03:40:02,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-06-05 03:40:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1450. [2021-06-05 03:40:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9185645272601795) internal successors, (5678), 1449 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5678 transitions. [2021-06-05 03:40:02,785 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5678 transitions. Word has length 25 [2021-06-05 03:40:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:02,785 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5678 transitions. [2021-06-05 03:40:02,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5678 transitions. [2021-06-05 03:40:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:02,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:02,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:02,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 03:40:02,787 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:02,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:02,787 INFO L82 PathProgramCache]: Analyzing trace with hash -27413701, now seen corresponding path program 360 times [2021-06-05 03:40:02,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:02,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885752595] [2021-06-05 03:40:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:02,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:02,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885752595] [2021-06-05 03:40:02,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885752595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:02,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:02,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:02,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742493649] [2021-06-05 03:40:02,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:02,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:02,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:02,880 INFO L87 Difference]: Start difference. First operand 1450 states and 5678 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:02,931 INFO L93 Difference]: Finished difference Result 2813 states and 10337 transitions. [2021-06-05 03:40:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:02,936 INFO L225 Difference]: With dead ends: 2813 [2021-06-05 03:40:02,936 INFO L226 Difference]: Without dead ends: 2511 [2021-06-05 03:40:02,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:02,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-06-05 03:40:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1370. [2021-06-05 03:40:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9656683710737766) internal successors, (5429), 1369 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5429 transitions. [2021-06-05 03:40:02,974 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5429 transitions. Word has length 25 [2021-06-05 03:40:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:02,974 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5429 transitions. [2021-06-05 03:40:02,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5429 transitions. [2021-06-05 03:40:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:02,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:02,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:02,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 03:40:02,976 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:02,976 INFO L82 PathProgramCache]: Analyzing trace with hash 953609979, now seen corresponding path program 361 times [2021-06-05 03:40:02,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:02,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157948560] [2021-06-05 03:40:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:03,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:03,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157948560] [2021-06-05 03:40:03,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157948560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:03,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:03,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:03,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289640588] [2021-06-05 03:40:03,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:03,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:03,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:03,068 INFO L87 Difference]: Start difference. First operand 1370 states and 5429 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:03,119 INFO L93 Difference]: Finished difference Result 2920 states and 10769 transitions. [2021-06-05 03:40:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:03,124 INFO L225 Difference]: With dead ends: 2920 [2021-06-05 03:40:03,125 INFO L226 Difference]: Without dead ends: 2761 [2021-06-05 03:40:03,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-06-05 03:40:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1418. [2021-06-05 03:40:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.961185603387438) internal successors, (5613), 1417 states have internal predecessors, (5613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5613 transitions. [2021-06-05 03:40:03,165 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5613 transitions. Word has length 25 [2021-06-05 03:40:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:03,165 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5613 transitions. [2021-06-05 03:40:03,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5613 transitions. [2021-06-05 03:40:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:03,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:03,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:03,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 03:40:03,167 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash -54688005, now seen corresponding path program 362 times [2021-06-05 03:40:03,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:03,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183469111] [2021-06-05 03:40:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:03,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:03,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183469111] [2021-06-05 03:40:03,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183469111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:03,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:03,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:03,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168387164] [2021-06-05 03:40:03,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:03,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:03,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:03,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:03,262 INFO L87 Difference]: Start difference. First operand 1418 states and 5613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:03,321 INFO L93 Difference]: Finished difference Result 2983 states and 10976 transitions. [2021-06-05 03:40:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:03,327 INFO L225 Difference]: With dead ends: 2983 [2021-06-05 03:40:03,327 INFO L226 Difference]: Without dead ends: 2729 [2021-06-05 03:40:03,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-06-05 03:40:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1386. [2021-06-05 03:40:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.96028880866426) internal successors, (5485), 1385 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5485 transitions. [2021-06-05 03:40:03,368 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5485 transitions. Word has length 25 [2021-06-05 03:40:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:03,368 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5485 transitions. [2021-06-05 03:40:03,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5485 transitions. [2021-06-05 03:40:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:03,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:03,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:03,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 03:40:03,370 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:03,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1942643485, now seen corresponding path program 363 times [2021-06-05 03:40:03,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:03,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285687478] [2021-06-05 03:40:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:03,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:03,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285687478] [2021-06-05 03:40:03,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285687478] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:03,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:03,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:03,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147499179] [2021-06-05 03:40:03,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:03,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:03,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:03,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:03,479 INFO L87 Difference]: Start difference. First operand 1386 states and 5485 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:03,531 INFO L93 Difference]: Finished difference Result 2869 states and 10570 transitions. [2021-06-05 03:40:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:03,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:03,536 INFO L225 Difference]: With dead ends: 2869 [2021-06-05 03:40:03,537 INFO L226 Difference]: Without dead ends: 2710 [2021-06-05 03:40:03,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-06-05 03:40:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1402. [2021-06-05 03:40:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9493219129193435) internal successors, (5533), 1401 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5533 transitions. [2021-06-05 03:40:03,576 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5533 transitions. Word has length 25 [2021-06-05 03:40:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:03,576 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5533 transitions. [2021-06-05 03:40:03,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5533 transitions. [2021-06-05 03:40:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:03,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:03,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:03,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 03:40:03,578 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1344025827, now seen corresponding path program 364 times [2021-06-05 03:40:03,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:03,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046863912] [2021-06-05 03:40:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:03,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:03,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046863912] [2021-06-05 03:40:03,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046863912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:03,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:03,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:03,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216352289] [2021-06-05 03:40:03,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:03,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:03,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:03,685 INFO L87 Difference]: Start difference. First operand 1402 states and 5533 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:03,761 INFO L93 Difference]: Finished difference Result 2897 states and 10658 transitions. [2021-06-05 03:40:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:03,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:03,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:03,767 INFO L225 Difference]: With dead ends: 2897 [2021-06-05 03:40:03,767 INFO L226 Difference]: Without dead ends: 2694 [2021-06-05 03:40:03,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-06-05 03:40:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1386. [2021-06-05 03:40:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.954512635379061) internal successors, (5477), 1385 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5477 transitions. [2021-06-05 03:40:03,804 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5477 transitions. Word has length 25 [2021-06-05 03:40:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:03,804 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5477 transitions. [2021-06-05 03:40:03,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5477 transitions. [2021-06-05 03:40:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:03,806 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:03,806 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:03,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 03:40:03,806 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:03,806 INFO L82 PathProgramCache]: Analyzing trace with hash 344220445, now seen corresponding path program 365 times [2021-06-05 03:40:03,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:03,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741534891] [2021-06-05 03:40:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:03,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:03,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741534891] [2021-06-05 03:40:03,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741534891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:03,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:03,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:03,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759627126] [2021-06-05 03:40:03,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:03,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:03,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:03,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:03,892 INFO L87 Difference]: Start difference. First operand 1386 states and 5477 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:03,973 INFO L93 Difference]: Finished difference Result 2990 states and 11012 transitions. [2021-06-05 03:40:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:03,978 INFO L225 Difference]: With dead ends: 2990 [2021-06-05 03:40:03,978 INFO L226 Difference]: Without dead ends: 2803 [2021-06-05 03:40:03,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-06-05 03:40:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1432. [2021-06-05 03:40:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9371069182389937) internal successors, (5634), 1431 states have internal predecessors, (5634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5634 transitions. [2021-06-05 03:40:04,016 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5634 transitions. Word has length 25 [2021-06-05 03:40:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:04,016 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5634 transitions. [2021-06-05 03:40:04,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5634 transitions. [2021-06-05 03:40:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:04,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:04,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:04,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 03:40:04,018 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash -8919045, now seen corresponding path program 366 times [2021-06-05 03:40:04,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:04,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659377349] [2021-06-05 03:40:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:04,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:04,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659377349] [2021-06-05 03:40:04,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659377349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:04,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:04,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:04,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353159717] [2021-06-05 03:40:04,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:04,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:04,103 INFO L87 Difference]: Start difference. First operand 1432 states and 5634 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:04,155 INFO L93 Difference]: Finished difference Result 3025 states and 11101 transitions. [2021-06-05 03:40:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:04,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:04,161 INFO L225 Difference]: With dead ends: 3025 [2021-06-05 03:40:04,161 INFO L226 Difference]: Without dead ends: 2741 [2021-06-05 03:40:04,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-06-05 03:40:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1370. [2021-06-05 03:40:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.959824689554419) internal successors, (5421), 1369 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5421 transitions. [2021-06-05 03:40:04,200 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5421 transitions. Word has length 25 [2021-06-05 03:40:04,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:04,200 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5421 transitions. [2021-06-05 03:40:04,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5421 transitions. [2021-06-05 03:40:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:04,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:04,202 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:04,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 03:40:04,202 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1631755555, now seen corresponding path program 367 times [2021-06-05 03:40:04,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:04,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923977567] [2021-06-05 03:40:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:04,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:04,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923977567] [2021-06-05 03:40:04,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923977567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:04,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:04,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821265416] [2021-06-05 03:40:04,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:04,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:04,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:04,301 INFO L87 Difference]: Start difference. First operand 1370 states and 5421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:04,352 INFO L93 Difference]: Finished difference Result 2914 states and 10742 transitions. [2021-06-05 03:40:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:04,358 INFO L225 Difference]: With dead ends: 2914 [2021-06-05 03:40:04,358 INFO L226 Difference]: Without dead ends: 2755 [2021-06-05 03:40:04,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2021-06-05 03:40:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1418. [2021-06-05 03:40:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.9555398729710656) internal successors, (5605), 1417 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5605 transitions. [2021-06-05 03:40:04,397 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5605 transitions. Word has length 25 [2021-06-05 03:40:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:04,397 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5605 transitions. [2021-06-05 03:40:04,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5605 transitions. [2021-06-05 03:40:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:04,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:04,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:04,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 03:40:04,399 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:04,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1654913757, now seen corresponding path program 368 times [2021-06-05 03:40:04,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:04,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664547771] [2021-06-05 03:40:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:04,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:04,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664547771] [2021-06-05 03:40:04,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664547771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:04,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:04,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:04,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961662774] [2021-06-05 03:40:04,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:04,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:04,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:04,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:04,497 INFO L87 Difference]: Start difference. First operand 1418 states and 5605 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:04,565 INFO L93 Difference]: Finished difference Result 2977 states and 10949 transitions. [2021-06-05 03:40:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:04,572 INFO L225 Difference]: With dead ends: 2977 [2021-06-05 03:40:04,572 INFO L226 Difference]: Without dead ends: 2723 [2021-06-05 03:40:04,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-06-05 03:40:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1386. [2021-06-05 03:40:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.954512635379061) internal successors, (5477), 1385 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5477 transitions. [2021-06-05 03:40:04,627 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5477 transitions. Word has length 25 [2021-06-05 03:40:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:04,628 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5477 transitions. [2021-06-05 03:40:04,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5477 transitions. [2021-06-05 03:40:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:04,630 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:04,630 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:04,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 03:40:04,630 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1626002787, now seen corresponding path program 369 times [2021-06-05 03:40:04,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:04,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550124940] [2021-06-05 03:40:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:04,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:04,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550124940] [2021-06-05 03:40:04,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550124940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:04,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:04,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:04,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162749024] [2021-06-05 03:40:04,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:04,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:04,732 INFO L87 Difference]: Start difference. First operand 1386 states and 5477 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:04,794 INFO L93 Difference]: Finished difference Result 2859 states and 10531 transitions. [2021-06-05 03:40:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:04,800 INFO L225 Difference]: With dead ends: 2859 [2021-06-05 03:40:04,800 INFO L226 Difference]: Without dead ends: 2700 [2021-06-05 03:40:04,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2021-06-05 03:40:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1402. [2021-06-05 03:40:04,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9436117059243396) internal successors, (5525), 1401 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5525 transitions. [2021-06-05 03:40:04,838 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5525 transitions. Word has length 25 [2021-06-05 03:40:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:04,839 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5525 transitions. [2021-06-05 03:40:04,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5525 transitions. [2021-06-05 03:40:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:04,840 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:04,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:04,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 03:40:04,841 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash 54493853, now seen corresponding path program 370 times [2021-06-05 03:40:04,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:04,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140660098] [2021-06-05 03:40:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:04,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:04,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140660098] [2021-06-05 03:40:04,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140660098] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:04,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:04,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:04,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100989500] [2021-06-05 03:40:04,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:04,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:04,926 INFO L87 Difference]: Start difference. First operand 1402 states and 5525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:04,998 INFO L93 Difference]: Finished difference Result 2883 states and 10607 transitions. [2021-06-05 03:40:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:04,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:05,003 INFO L225 Difference]: With dead ends: 2883 [2021-06-05 03:40:05,004 INFO L226 Difference]: Without dead ends: 2684 [2021-06-05 03:40:05,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-06-05 03:40:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1386. [2021-06-05 03:40:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.948736462093863) internal successors, (5469), 1385 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5469 transitions. [2021-06-05 03:40:05,042 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5469 transitions. Word has length 25 [2021-06-05 03:40:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:05,042 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5469 transitions. [2021-06-05 03:40:05,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5469 transitions. [2021-06-05 03:40:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:05,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:05,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:05,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 03:40:05,044 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1742740125, now seen corresponding path program 371 times [2021-06-05 03:40:05,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:05,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669853888] [2021-06-05 03:40:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:05,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:05,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669853888] [2021-06-05 03:40:05,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669853888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:05,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:05,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:05,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447458578] [2021-06-05 03:40:05,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:05,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:05,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:05,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:05,139 INFO L87 Difference]: Start difference. First operand 1386 states and 5469 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:05,204 INFO L93 Difference]: Finished difference Result 2974 states and 10954 transitions. [2021-06-05 03:40:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:05,209 INFO L225 Difference]: With dead ends: 2974 [2021-06-05 03:40:05,209 INFO L226 Difference]: Without dead ends: 2791 [2021-06-05 03:40:05,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-06-05 03:40:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1430. [2021-06-05 03:40:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 3.933519944016795) internal successors, (5621), 1429 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5621 transitions. [2021-06-05 03:40:05,248 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5621 transitions. Word has length 25 [2021-06-05 03:40:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:05,248 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 5621 transitions. [2021-06-05 03:40:05,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5621 transitions. [2021-06-05 03:40:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:05,250 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:05,250 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:05,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 03:40:05,250 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:05,250 INFO L82 PathProgramCache]: Analyzing trace with hash 738408187, now seen corresponding path program 372 times [2021-06-05 03:40:05,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:05,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155196828] [2021-06-05 03:40:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:05,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:05,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155196828] [2021-06-05 03:40:05,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155196828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:05,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:05,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:05,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798889312] [2021-06-05 03:40:05,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:05,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:05,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:05,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:05,347 INFO L87 Difference]: Start difference. First operand 1430 states and 5621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:05,398 INFO L93 Difference]: Finished difference Result 3013 states and 11057 transitions. [2021-06-05 03:40:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:05,404 INFO L225 Difference]: With dead ends: 3013 [2021-06-05 03:40:05,404 INFO L226 Difference]: Without dead ends: 2731 [2021-06-05 03:40:05,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-06-05 03:40:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 1370. [2021-06-05 03:40:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.953981008035062) internal successors, (5413), 1369 states have internal predecessors, (5413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5413 transitions. [2021-06-05 03:40:05,442 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5413 transitions. Word has length 25 [2021-06-05 03:40:05,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:05,442 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5413 transitions. [2021-06-05 03:40:05,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5413 transitions. [2021-06-05 03:40:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:05,444 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:05,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:05,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 03:40:05,444 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:05,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2090389953, now seen corresponding path program 373 times [2021-06-05 03:40:05,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:05,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911217835] [2021-06-05 03:40:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:05,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:05,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911217835] [2021-06-05 03:40:05,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911217835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:05,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:05,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:05,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521586871] [2021-06-05 03:40:05,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:05,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:05,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:05,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:05,533 INFO L87 Difference]: Start difference. First operand 1370 states and 5413 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:05,584 INFO L93 Difference]: Finished difference Result 2788 states and 10268 transitions. [2021-06-05 03:40:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:05,589 INFO L225 Difference]: With dead ends: 2788 [2021-06-05 03:40:05,589 INFO L226 Difference]: Without dead ends: 2629 [2021-06-05 03:40:05,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-06-05 03:40:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1394. [2021-06-05 03:40:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.946159368269921) internal successors, (5497), 1393 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5497 transitions. [2021-06-05 03:40:05,627 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5497 transitions. Word has length 25 [2021-06-05 03:40:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:05,627 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5497 transitions. [2021-06-05 03:40:05,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5497 transitions. [2021-06-05 03:40:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:05,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:05,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:05,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 03:40:05,629 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1082091969, now seen corresponding path program 374 times [2021-06-05 03:40:05,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:05,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506380510] [2021-06-05 03:40:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:05,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:05,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506380510] [2021-06-05 03:40:05,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506380510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:05,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:05,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:05,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384248331] [2021-06-05 03:40:05,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:05,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:05,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:05,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:05,715 INFO L87 Difference]: Start difference. First operand 1394 states and 5497 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:05,780 INFO L93 Difference]: Finished difference Result 2816 states and 10356 transitions. [2021-06-05 03:40:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:05,785 INFO L225 Difference]: With dead ends: 2816 [2021-06-05 03:40:05,785 INFO L226 Difference]: Without dead ends: 2613 [2021-06-05 03:40:05,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2021-06-05 03:40:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1378. [2021-06-05 03:40:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.9513435003631083) internal successors, (5441), 1377 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5441 transitions. [2021-06-05 03:40:05,822 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5441 transitions. Word has length 25 [2021-06-05 03:40:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:05,822 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5441 transitions. [2021-06-05 03:40:05,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5441 transitions. [2021-06-05 03:40:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:05,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:05,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:05,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 03:40:05,824 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1357780381, now seen corresponding path program 375 times [2021-06-05 03:40:05,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:05,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153256725] [2021-06-05 03:40:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:05,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:05,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153256725] [2021-06-05 03:40:05,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153256725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:05,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:05,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:05,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743191857] [2021-06-05 03:40:05,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:05,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:05,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:05,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:05,904 INFO L87 Difference]: Start difference. First operand 1378 states and 5441 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:05,962 INFO L93 Difference]: Finished difference Result 2784 states and 10248 transitions. [2021-06-05 03:40:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:05,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:05,967 INFO L225 Difference]: With dead ends: 2784 [2021-06-05 03:40:05,967 INFO L226 Difference]: Without dead ends: 2625 [2021-06-05 03:40:05,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:05,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2021-06-05 03:40:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 1394. [2021-06-05 03:40:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.940416367552046) internal successors, (5489), 1393 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5489 transitions. [2021-06-05 03:40:06,006 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5489 transitions. Word has length 25 [2021-06-05 03:40:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:06,006 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5489 transitions. [2021-06-05 03:40:06,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5489 transitions. [2021-06-05 03:40:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:06,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:06,008 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:06,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 03:40:06,008 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:06,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1327920703, now seen corresponding path program 376 times [2021-06-05 03:40:06,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:06,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145992413] [2021-06-05 03:40:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:06,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:06,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145992413] [2021-06-05 03:40:06,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145992413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:06,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:06,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:06,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817764001] [2021-06-05 03:40:06,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:06,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:06,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:06,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:06,085 INFO L87 Difference]: Start difference. First operand 1394 states and 5489 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:06,150 INFO L93 Difference]: Finished difference Result 2808 states and 10324 transitions. [2021-06-05 03:40:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:06,155 INFO L225 Difference]: With dead ends: 2808 [2021-06-05 03:40:06,155 INFO L226 Difference]: Without dead ends: 2609 [2021-06-05 03:40:06,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2021-06-05 03:40:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1378. [2021-06-05 03:40:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.945533769063181) internal successors, (5433), 1377 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5433 transitions. [2021-06-05 03:40:06,194 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5433 transitions. Word has length 25 [2021-06-05 03:40:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:06,194 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5433 transitions. [2021-06-05 03:40:06,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5433 transitions. [2021-06-05 03:40:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:06,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:06,196 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:06,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 03:40:06,196 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:06,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1032524225, now seen corresponding path program 377 times [2021-06-05 03:40:06,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:06,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649456099] [2021-06-05 03:40:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:06,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:06,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649456099] [2021-06-05 03:40:06,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649456099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:06,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:06,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:06,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400777255] [2021-06-05 03:40:06,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:06,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:06,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:06,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:06,273 INFO L87 Difference]: Start difference. First operand 1378 states and 5433 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:06,338 INFO L93 Difference]: Finished difference Result 2852 states and 10500 transitions. [2021-06-05 03:40:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:06,343 INFO L225 Difference]: With dead ends: 2852 [2021-06-05 03:40:06,343 INFO L226 Difference]: Without dead ends: 2665 [2021-06-05 03:40:06,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-06-05 03:40:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1406. [2021-06-05 03:40:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.929537366548043) internal successors, (5521), 1405 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5521 transitions. [2021-06-05 03:40:06,383 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5521 transitions. Word has length 25 [2021-06-05 03:40:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:06,383 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 5521 transitions. [2021-06-05 03:40:06,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5521 transitions. [2021-06-05 03:40:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:06,385 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:06,385 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:06,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 03:40:06,385 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1219106077, now seen corresponding path program 378 times [2021-06-05 03:40:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:06,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045172669] [2021-06-05 03:40:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:06,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:06,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045172669] [2021-06-05 03:40:06,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045172669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:06,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:06,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:06,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811124656] [2021-06-05 03:40:06,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:06,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:06,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:06,476 INFO L87 Difference]: Start difference. First operand 1406 states and 5521 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:06,543 INFO L93 Difference]: Finished difference Result 2848 states and 10460 transitions. [2021-06-05 03:40:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:06,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:06,548 INFO L225 Difference]: With dead ends: 2848 [2021-06-05 03:40:06,548 INFO L226 Difference]: Without dead ends: 2629 [2021-06-05 03:40:06,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-06-05 03:40:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1370. [2021-06-05 03:40:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9510591672753836) internal successors, (5409), 1369 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5409 transitions. [2021-06-05 03:40:06,585 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5409 transitions. Word has length 25 [2021-06-05 03:40:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:06,585 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5409 transitions. [2021-06-05 03:40:06,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5409 transitions. [2021-06-05 03:40:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:06,587 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:06,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:06,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 03:40:06,588 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2125494721, now seen corresponding path program 379 times [2021-06-05 03:40:06,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:06,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216118225] [2021-06-05 03:40:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:06,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:06,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216118225] [2021-06-05 03:40:06,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216118225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:06,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:06,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:06,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555107941] [2021-06-05 03:40:06,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:06,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:06,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:06,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:06,666 INFO L87 Difference]: Start difference. First operand 1370 states and 5409 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:06,734 INFO L93 Difference]: Finished difference Result 2987 states and 11039 transitions. [2021-06-05 03:40:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:06,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:06,741 INFO L225 Difference]: With dead ends: 2987 [2021-06-05 03:40:06,741 INFO L226 Difference]: Without dead ends: 2800 [2021-06-05 03:40:06,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2021-06-05 03:40:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1420. [2021-06-05 03:40:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9450317124735728) internal successors, (5598), 1419 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5598 transitions. [2021-06-05 03:40:06,782 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5598 transitions. Word has length 25 [2021-06-05 03:40:06,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:06,782 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5598 transitions. [2021-06-05 03:40:06,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5598 transitions. [2021-06-05 03:40:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:06,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:06,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:06,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 03:40:06,784 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash 126135581, now seen corresponding path program 380 times [2021-06-05 03:40:06,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:06,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034554110] [2021-06-05 03:40:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:06,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:06,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034554110] [2021-06-05 03:40:06,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034554110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:06,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:06,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:06,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461053531] [2021-06-05 03:40:06,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:06,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:06,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:06,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:06,865 INFO L87 Difference]: Start difference. First operand 1420 states and 5598 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:06,936 INFO L93 Difference]: Finished difference Result 2983 states and 10999 transitions. [2021-06-05 03:40:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:06,941 INFO L225 Difference]: With dead ends: 2983 [2021-06-05 03:40:06,942 INFO L226 Difference]: Without dead ends: 2772 [2021-06-05 03:40:06,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-06-05 03:40:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1392. [2021-06-05 03:40:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9511143062544933) internal successors, (5496), 1391 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5496 transitions. [2021-06-05 03:40:06,980 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5496 transitions. Word has length 25 [2021-06-05 03:40:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:06,980 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5496 transitions. [2021-06-05 03:40:06,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5496 transitions. [2021-06-05 03:40:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:06,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:06,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:06,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 03:40:06,982 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash -920845539, now seen corresponding path program 381 times [2021-06-05 03:40:06,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:06,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81981721] [2021-06-05 03:40:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:07,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:07,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81981721] [2021-06-05 03:40:07,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81981721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:07,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:07,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:07,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802507107] [2021-06-05 03:40:07,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:07,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:07,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:07,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:07,059 INFO L87 Difference]: Start difference. First operand 1392 states and 5496 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:07,131 INFO L93 Difference]: Finished difference Result 3044 states and 11227 transitions. [2021-06-05 03:40:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:07,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:07,137 INFO L225 Difference]: With dead ends: 3044 [2021-06-05 03:40:07,137 INFO L226 Difference]: Without dead ends: 2857 [2021-06-05 03:40:07,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-06-05 03:40:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1438. [2021-06-05 03:40:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 3.9338900487125956) internal successors, (5653), 1437 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 5653 transitions. [2021-06-05 03:40:07,177 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 5653 transitions. Word has length 25 [2021-06-05 03:40:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:07,177 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 5653 transitions. [2021-06-05 03:40:07,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 5653 transitions. [2021-06-05 03:40:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:07,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:07,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:07,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 03:40:07,179 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:07,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:07,179 INFO L82 PathProgramCache]: Analyzing trace with hash -839955683, now seen corresponding path program 382 times [2021-06-05 03:40:07,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:07,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490496283] [2021-06-05 03:40:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:07,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:07,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490496283] [2021-06-05 03:40:07,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490496283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:07,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:07,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:07,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982110705] [2021-06-05 03:40:07,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:07,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:07,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:07,256 INFO L87 Difference]: Start difference. First operand 1438 states and 5653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:07,312 INFO L93 Difference]: Finished difference Result 3079 states and 11316 transitions. [2021-06-05 03:40:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:07,318 INFO L225 Difference]: With dead ends: 3079 [2021-06-05 03:40:07,318 INFO L226 Difference]: Without dead ends: 2811 [2021-06-05 03:40:07,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-06-05 03:40:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1392. [2021-06-05 03:40:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9352983465133) internal successors, (5474), 1391 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5474 transitions. [2021-06-05 03:40:07,356 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5474 transitions. Word has length 25 [2021-06-05 03:40:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:07,356 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5474 transitions. [2021-06-05 03:40:07,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5474 transitions. [2021-06-05 03:40:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:07,358 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:07,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:07,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 03:40:07,358 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash 61502075, now seen corresponding path program 383 times [2021-06-05 03:40:07,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:07,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274260156] [2021-06-05 03:40:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:07,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:07,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274260156] [2021-06-05 03:40:07,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274260156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:07,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:07,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:07,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265110932] [2021-06-05 03:40:07,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:07,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:07,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:07,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:07,448 INFO L87 Difference]: Start difference. First operand 1392 states and 5474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:07,520 INFO L93 Difference]: Finished difference Result 3034 states and 11174 transitions. [2021-06-05 03:40:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:07,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:07,526 INFO L225 Difference]: With dead ends: 3034 [2021-06-05 03:40:07,526 INFO L226 Difference]: Without dead ends: 2851 [2021-06-05 03:40:07,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-06-05 03:40:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1436. [2021-06-05 03:40:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9205574912891987) internal successors, (5626), 1435 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5626 transitions. [2021-06-05 03:40:07,566 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5626 transitions. Word has length 25 [2021-06-05 03:40:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:07,566 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5626 transitions. [2021-06-05 03:40:07,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5626 transitions. [2021-06-05 03:40:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:07,568 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:07,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:07,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 03:40:07,568 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1008016931, now seen corresponding path program 384 times [2021-06-05 03:40:07,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:07,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489724523] [2021-06-05 03:40:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:07,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:07,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489724523] [2021-06-05 03:40:07,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489724523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:07,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:07,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:07,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129226286] [2021-06-05 03:40:07,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:07,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:07,677 INFO L87 Difference]: Start difference. First operand 1436 states and 5626 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:07,747 INFO L93 Difference]: Finished difference Result 3073 states and 11277 transitions. [2021-06-05 03:40:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:07,753 INFO L225 Difference]: With dead ends: 3073 [2021-06-05 03:40:07,753 INFO L226 Difference]: Without dead ends: 2777 [2021-06-05 03:40:07,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:07,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2021-06-05 03:40:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 1362. [2021-06-05 03:40:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9566495224099927) internal successors, (5385), 1361 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5385 transitions. [2021-06-05 03:40:07,790 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5385 transitions. Word has length 25 [2021-06-05 03:40:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:07,790 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5385 transitions. [2021-06-05 03:40:07,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5385 transitions. [2021-06-05 03:40:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:07,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:07,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:07,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 03:40:07,792 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1091571107, now seen corresponding path program 385 times [2021-06-05 03:40:07,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:07,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269010749] [2021-06-05 03:40:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:07,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:07,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269010749] [2021-06-05 03:40:07,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269010749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:07,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:07,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:07,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449165182] [2021-06-05 03:40:07,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:07,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:07,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:07,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:07,883 INFO L87 Difference]: Start difference. First operand 1362 states and 5385 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:07,937 INFO L93 Difference]: Finished difference Result 2878 states and 10584 transitions. [2021-06-05 03:40:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:07,942 INFO L225 Difference]: With dead ends: 2878 [2021-06-05 03:40:07,942 INFO L226 Difference]: Without dead ends: 2719 [2021-06-05 03:40:07,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2021-06-05 03:40:07,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 1394. [2021-06-05 03:40:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.946159368269921) internal successors, (5497), 1393 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5497 transitions. [2021-06-05 03:40:07,981 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5497 transitions. Word has length 25 [2021-06-05 03:40:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:07,981 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5497 transitions. [2021-06-05 03:40:07,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5497 transitions. [2021-06-05 03:40:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:07,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:07,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:07,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 03:40:07,984 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2099869091, now seen corresponding path program 386 times [2021-06-05 03:40:07,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:07,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348107627] [2021-06-05 03:40:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:08,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:08,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348107627] [2021-06-05 03:40:08,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348107627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:08,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:08,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:08,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604240147] [2021-06-05 03:40:08,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:08,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:08,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:08,079 INFO L87 Difference]: Start difference. First operand 1394 states and 5497 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:08,133 INFO L93 Difference]: Finished difference Result 2941 states and 10791 transitions. [2021-06-05 03:40:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:08,139 INFO L225 Difference]: With dead ends: 2941 [2021-06-05 03:40:08,139 INFO L226 Difference]: Without dead ends: 2687 [2021-06-05 03:40:08,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-06-05 03:40:08,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1362. [2021-06-05 03:40:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9448934606906687) internal successors, (5369), 1361 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5369 transitions. [2021-06-05 03:40:08,177 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5369 transitions. Word has length 25 [2021-06-05 03:40:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:08,177 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5369 transitions. [2021-06-05 03:40:08,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5369 transitions. [2021-06-05 03:40:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:08,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:08,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:08,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 03:40:08,179 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:08,179 INFO L82 PathProgramCache]: Analyzing trace with hash -102537601, now seen corresponding path program 387 times [2021-06-05 03:40:08,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:08,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845194242] [2021-06-05 03:40:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:08,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:08,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845194242] [2021-06-05 03:40:08,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845194242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:08,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:08,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:08,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287019452] [2021-06-05 03:40:08,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:08,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:08,274 INFO L87 Difference]: Start difference. First operand 1362 states and 5369 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:08,329 INFO L93 Difference]: Finished difference Result 2827 states and 10385 transitions. [2021-06-05 03:40:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:08,334 INFO L225 Difference]: With dead ends: 2827 [2021-06-05 03:40:08,335 INFO L226 Difference]: Without dead ends: 2668 [2021-06-05 03:40:08,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-06-05 03:40:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1378. [2021-06-05 03:40:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.933914306463326) internal successors, (5417), 1377 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5417 transitions. [2021-06-05 03:40:08,373 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5417 transitions. Word has length 25 [2021-06-05 03:40:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:08,373 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5417 transitions. [2021-06-05 03:40:08,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5417 transitions. [2021-06-05 03:40:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:08,375 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:08,375 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:08,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 03:40:08,375 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash 905760383, now seen corresponding path program 388 times [2021-06-05 03:40:08,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:08,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747727180] [2021-06-05 03:40:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:08,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:08,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747727180] [2021-06-05 03:40:08,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747727180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:08,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:08,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:08,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321545617] [2021-06-05 03:40:08,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:08,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:08,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:08,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:08,468 INFO L87 Difference]: Start difference. First operand 1378 states and 5417 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:08,537 INFO L93 Difference]: Finished difference Result 2855 states and 10473 transitions. [2021-06-05 03:40:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:08,542 INFO L225 Difference]: With dead ends: 2855 [2021-06-05 03:40:08,542 INFO L226 Difference]: Without dead ends: 2652 [2021-06-05 03:40:08,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-06-05 03:40:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1362. [2021-06-05 03:40:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9390154298310067) internal successors, (5361), 1361 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5361 transitions. [2021-06-05 03:40:08,579 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5361 transitions. Word has length 25 [2021-06-05 03:40:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:08,579 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5361 transitions. [2021-06-05 03:40:08,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5361 transitions. [2021-06-05 03:40:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:08,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:08,581 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:08,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 03:40:08,581 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1700960641, now seen corresponding path program 389 times [2021-06-05 03:40:08,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:08,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622387699] [2021-06-05 03:40:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:08,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:08,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622387699] [2021-06-05 03:40:08,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622387699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:08,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:08,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:08,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158619147] [2021-06-05 03:40:08,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:08,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:08,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:08,664 INFO L87 Difference]: Start difference. First operand 1362 states and 5361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:08,728 INFO L93 Difference]: Finished difference Result 2948 states and 10827 transitions. [2021-06-05 03:40:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:08,733 INFO L225 Difference]: With dead ends: 2948 [2021-06-05 03:40:08,733 INFO L226 Difference]: Without dead ends: 2761 [2021-06-05 03:40:08,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-06-05 03:40:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1408. [2021-06-05 03:40:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.92181947405828) internal successors, (5518), 1407 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5518 transitions. [2021-06-05 03:40:08,771 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5518 transitions. Word has length 25 [2021-06-05 03:40:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:08,771 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 5518 transitions. [2021-06-05 03:40:08,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5518 transitions. [2021-06-05 03:40:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:08,773 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:08,773 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:08,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 03:40:08,773 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:08,773 INFO L82 PathProgramCache]: Analyzing trace with hash -2054100131, now seen corresponding path program 390 times [2021-06-05 03:40:08,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:08,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922158044] [2021-06-05 03:40:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:08,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:08,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922158044] [2021-06-05 03:40:08,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922158044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:08,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:08,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:08,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772620353] [2021-06-05 03:40:08,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:08,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:08,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:08,863 INFO L87 Difference]: Start difference. First operand 1408 states and 5518 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:08,919 INFO L93 Difference]: Finished difference Result 2983 states and 10916 transitions. [2021-06-05 03:40:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:08,924 INFO L225 Difference]: With dead ends: 2983 [2021-06-05 03:40:08,924 INFO L226 Difference]: Without dead ends: 2699 [2021-06-05 03:40:08,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-06-05 03:40:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 1346. [2021-06-05 03:40:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.9442379182156135) internal successors, (5305), 1345 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5305 transitions. [2021-06-05 03:40:08,972 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5305 transitions. Word has length 25 [2021-06-05 03:40:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:08,972 INFO L482 AbstractCegarLoop]: Abstraction has 1346 states and 5305 transitions. [2021-06-05 03:40:08,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5305 transitions. [2021-06-05 03:40:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:08,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:08,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:08,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 03:40:08,975 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1281055325, now seen corresponding path program 391 times [2021-06-05 03:40:08,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:08,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176415724] [2021-06-05 03:40:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:09,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:09,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176415724] [2021-06-05 03:40:09,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176415724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:09,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:09,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:09,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811828220] [2021-06-05 03:40:09,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:09,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:09,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:09,070 INFO L87 Difference]: Start difference. First operand 1346 states and 5305 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:09,125 INFO L93 Difference]: Finished difference Result 2828 states and 10385 transitions. [2021-06-05 03:40:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:09,130 INFO L225 Difference]: With dead ends: 2828 [2021-06-05 03:40:09,130 INFO L226 Difference]: Without dead ends: 2669 [2021-06-05 03:40:09,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-06-05 03:40:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1394. [2021-06-05 03:40:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.940416367552046) internal successors, (5489), 1393 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5489 transitions. [2021-06-05 03:40:09,167 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5489 transitions. Word has length 25 [2021-06-05 03:40:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:09,167 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5489 transitions. [2021-06-05 03:40:09,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5489 transitions. [2021-06-05 03:40:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:09,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:09,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:09,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 03:40:09,169 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:09,169 INFO L82 PathProgramCache]: Analyzing trace with hash 272757341, now seen corresponding path program 392 times [2021-06-05 03:40:09,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:09,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234608571] [2021-06-05 03:40:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:09,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:09,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234608571] [2021-06-05 03:40:09,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234608571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:09,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:09,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:09,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542296566] [2021-06-05 03:40:09,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:09,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:09,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:09,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:09,264 INFO L87 Difference]: Start difference. First operand 1394 states and 5489 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:09,312 INFO L93 Difference]: Finished difference Result 2891 states and 10592 transitions. [2021-06-05 03:40:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:09,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:09,317 INFO L225 Difference]: With dead ends: 2891 [2021-06-05 03:40:09,317 INFO L226 Difference]: Without dead ends: 2637 [2021-06-05 03:40:09,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-06-05 03:40:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1362. [2021-06-05 03:40:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9390154298310067) internal successors, (5361), 1361 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5361 transitions. [2021-06-05 03:40:09,357 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5361 transitions. Word has length 25 [2021-06-05 03:40:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:09,357 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5361 transitions. [2021-06-05 03:40:09,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5361 transitions. [2021-06-05 03:40:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:09,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:09,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:09,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 03:40:09,359 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:09,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1973353955, now seen corresponding path program 393 times [2021-06-05 03:40:09,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:09,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386674235] [2021-06-05 03:40:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:09,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:09,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386674235] [2021-06-05 03:40:09,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386674235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:09,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:09,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:09,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619362825] [2021-06-05 03:40:09,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:09,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:09,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:09,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:09,451 INFO L87 Difference]: Start difference. First operand 1362 states and 5361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:09,503 INFO L93 Difference]: Finished difference Result 2733 states and 10034 transitions. [2021-06-05 03:40:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:09,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:09,508 INFO L225 Difference]: With dead ends: 2733 [2021-06-05 03:40:09,509 INFO L226 Difference]: Without dead ends: 2574 [2021-06-05 03:40:09,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-06-05 03:40:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1378. [2021-06-05 03:40:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.9281045751633985) internal successors, (5409), 1377 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5409 transitions. [2021-06-05 03:40:09,545 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5409 transitions. Word has length 25 [2021-06-05 03:40:09,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:09,545 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5409 transitions. [2021-06-05 03:40:09,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5409 transitions. [2021-06-05 03:40:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:09,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:09,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:09,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 03:40:09,547 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:09,548 INFO L82 PathProgramCache]: Analyzing trace with hash 379341341, now seen corresponding path program 394 times [2021-06-05 03:40:09,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:09,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836836881] [2021-06-05 03:40:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:09,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:09,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836836881] [2021-06-05 03:40:09,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836836881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:09,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:09,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:09,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277049652] [2021-06-05 03:40:09,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:09,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:09,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:09,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:09,634 INFO L87 Difference]: Start difference. First operand 1378 states and 5409 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:09,698 INFO L93 Difference]: Finished difference Result 2621 states and 9697 transitions. [2021-06-05 03:40:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:09,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:09,703 INFO L225 Difference]: With dead ends: 2621 [2021-06-05 03:40:09,703 INFO L226 Difference]: Without dead ends: 2430 [2021-06-05 03:40:09,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-06-05 03:40:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1362. [2021-06-05 03:40:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9331373989713447) internal successors, (5353), 1361 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5353 transitions. [2021-06-05 03:40:09,749 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5353 transitions. Word has length 25 [2021-06-05 03:40:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:09,749 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5353 transitions. [2021-06-05 03:40:09,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5353 transitions. [2021-06-05 03:40:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:09,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:09,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:09,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 03:40:09,751 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2067587613, now seen corresponding path program 395 times [2021-06-05 03:40:09,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:09,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918653564] [2021-06-05 03:40:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:09,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:09,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918653564] [2021-06-05 03:40:09,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918653564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:09,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:09,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:09,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634101657] [2021-06-05 03:40:09,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:09,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:09,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:09,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:09,881 INFO L87 Difference]: Start difference. First operand 1362 states and 5353 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:09,953 INFO L93 Difference]: Finished difference Result 2868 states and 10525 transitions. [2021-06-05 03:40:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:09,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:09,958 INFO L225 Difference]: With dead ends: 2868 [2021-06-05 03:40:09,958 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 03:40:09,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 152.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:09,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 03:40:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1402. [2021-06-05 03:40:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9207708779443253) internal successors, (5493), 1401 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5493 transitions. [2021-06-05 03:40:09,996 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5493 transitions. Word has length 25 [2021-06-05 03:40:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:09,997 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5493 transitions. [2021-06-05 03:40:09,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5493 transitions. [2021-06-05 03:40:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:09,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:09,998 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:09,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 03:40:09,999 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 412063227, now seen corresponding path program 396 times [2021-06-05 03:40:09,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:09,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124630897] [2021-06-05 03:40:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:10,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:10,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124630897] [2021-06-05 03:40:10,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124630897] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:10,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:10,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:10,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71330515] [2021-06-05 03:40:10,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:10,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:10,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:10,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:10,097 INFO L87 Difference]: Start difference. First operand 1402 states and 5493 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:10,146 INFO L93 Difference]: Finished difference Result 2820 states and 10325 transitions. [2021-06-05 03:40:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:10,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:10,151 INFO L225 Difference]: With dead ends: 2820 [2021-06-05 03:40:10,151 INFO L226 Difference]: Without dead ends: 2542 [2021-06-05 03:40:10,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-06-05 03:40:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1346. [2021-06-05 03:40:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.9382899628252788) internal successors, (5297), 1345 states have internal predecessors, (5297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5297 transitions. [2021-06-05 03:40:10,187 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5297 transitions. Word has length 25 [2021-06-05 03:40:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:10,187 INFO L482 AbstractCegarLoop]: Abstraction has 1346 states and 5297 transitions. [2021-06-05 03:40:10,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5297 transitions. [2021-06-05 03:40:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:10,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:10,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:10,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 03:40:10,189 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:10,190 INFO L82 PathProgramCache]: Analyzing trace with hash 119412159, now seen corresponding path program 397 times [2021-06-05 03:40:10,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:10,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639642832] [2021-06-05 03:40:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:10,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:10,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639642832] [2021-06-05 03:40:10,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639642832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:10,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:10,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:10,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994520752] [2021-06-05 03:40:10,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:10,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:10,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:10,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:10,276 INFO L87 Difference]: Start difference. First operand 1346 states and 5297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:10,330 INFO L93 Difference]: Finished difference Result 2718 states and 9975 transitions. [2021-06-05 03:40:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:10,335 INFO L225 Difference]: With dead ends: 2718 [2021-06-05 03:40:10,335 INFO L226 Difference]: Without dead ends: 2559 [2021-06-05 03:40:10,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-06-05 03:40:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1370. [2021-06-05 03:40:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9306062819576333) internal successors, (5381), 1369 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5381 transitions. [2021-06-05 03:40:10,373 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5381 transitions. Word has length 25 [2021-06-05 03:40:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:10,373 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5381 transitions. [2021-06-05 03:40:10,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5381 transitions. [2021-06-05 03:40:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:10,375 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:10,375 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:10,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 03:40:10,375 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:10,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:10,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1127710143, now seen corresponding path program 398 times [2021-06-05 03:40:10,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:10,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284866271] [2021-06-05 03:40:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:10,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:10,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284866271] [2021-06-05 03:40:10,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284866271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:10,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:10,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:10,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909917918] [2021-06-05 03:40:10,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:10,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:10,466 INFO L87 Difference]: Start difference. First operand 1370 states and 5381 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:10,528 INFO L93 Difference]: Finished difference Result 2746 states and 10063 transitions. [2021-06-05 03:40:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:10,533 INFO L225 Difference]: With dead ends: 2746 [2021-06-05 03:40:10,533 INFO L226 Difference]: Without dead ends: 2543 [2021-06-05 03:40:10,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-06-05 03:40:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1354. [2021-06-05 03:40:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.9356984478935697) internal successors, (5325), 1353 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5325 transitions. [2021-06-05 03:40:10,568 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5325 transitions. Word has length 25 [2021-06-05 03:40:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:10,568 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5325 transitions. [2021-06-05 03:40:10,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5325 transitions. [2021-06-05 03:40:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:10,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:10,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:10,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-05 03:40:10,570 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:10,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:10,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1996667491, now seen corresponding path program 399 times [2021-06-05 03:40:10,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:10,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45546721] [2021-06-05 03:40:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:10,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:10,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45546721] [2021-06-05 03:40:10,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45546721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:10,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:10,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:10,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428588134] [2021-06-05 03:40:10,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:10,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:10,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:10,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:10,649 INFO L87 Difference]: Start difference. First operand 1354 states and 5325 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:10,700 INFO L93 Difference]: Finished difference Result 2674 states and 9815 transitions. [2021-06-05 03:40:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:10,705 INFO L225 Difference]: With dead ends: 2674 [2021-06-05 03:40:10,705 INFO L226 Difference]: Without dead ends: 2515 [2021-06-05 03:40:10,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2021-06-05 03:40:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 1370. [2021-06-05 03:40:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9247626004382763) internal successors, (5373), 1369 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5373 transitions. [2021-06-05 03:40:10,740 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5373 transitions. Word has length 25 [2021-06-05 03:40:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:10,741 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5373 transitions. [2021-06-05 03:40:10,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5373 transitions. [2021-06-05 03:40:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:10,742 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:10,742 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:10,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-05 03:40:10,742 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:10,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:10,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1652768191, now seen corresponding path program 400 times [2021-06-05 03:40:10,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:10,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775023937] [2021-06-05 03:40:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:10,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:10,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775023937] [2021-06-05 03:40:10,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775023937] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:10,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:10,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:10,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646958048] [2021-06-05 03:40:10,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:10,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:10,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:10,820 INFO L87 Difference]: Start difference. First operand 1370 states and 5373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:10,885 INFO L93 Difference]: Finished difference Result 2562 states and 9478 transitions. [2021-06-05 03:40:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:10,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:10,890 INFO L225 Difference]: With dead ends: 2562 [2021-06-05 03:40:10,890 INFO L226 Difference]: Without dead ends: 2371 [2021-06-05 03:40:10,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2021-06-05 03:40:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1354. [2021-06-05 03:40:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.9297856614929785) internal successors, (5317), 1353 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5317 transitions. [2021-06-05 03:40:10,926 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5317 transitions. Word has length 25 [2021-06-05 03:40:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:10,926 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5317 transitions. [2021-06-05 03:40:10,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5317 transitions. [2021-06-05 03:40:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:10,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:10,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:10,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-05 03:40:10,929 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1379875393, now seen corresponding path program 401 times [2021-06-05 03:40:10,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:10,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541980812] [2021-06-05 03:40:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:11,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:11,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541980812] [2021-06-05 03:40:11,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541980812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:11,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:11,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:11,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765624028] [2021-06-05 03:40:11,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:11,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:11,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:11,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:11,005 INFO L87 Difference]: Start difference. First operand 1354 states and 5317 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:11,069 INFO L93 Difference]: Finished difference Result 2710 states and 9947 transitions. [2021-06-05 03:40:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:11,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:11,074 INFO L225 Difference]: With dead ends: 2710 [2021-06-05 03:40:11,074 INFO L226 Difference]: Without dead ends: 2523 [2021-06-05 03:40:11,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2021-06-05 03:40:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1378. [2021-06-05 03:40:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.916485112563544) internal successors, (5393), 1377 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5393 transitions. [2021-06-05 03:40:11,113 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5393 transitions. Word has length 25 [2021-06-05 03:40:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:11,113 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5393 transitions. [2021-06-05 03:40:11,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5393 transitions. [2021-06-05 03:40:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:11,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:11,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:11,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-05 03:40:11,115 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1522947357, now seen corresponding path program 402 times [2021-06-05 03:40:11,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:11,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554604598] [2021-06-05 03:40:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:11,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:11,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554604598] [2021-06-05 03:40:11,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554604598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:11,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:11,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:11,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87207381] [2021-06-05 03:40:11,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:11,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:11,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:11,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:11,192 INFO L87 Difference]: Start difference. First operand 1378 states and 5393 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:11,258 INFO L93 Difference]: Finished difference Result 2570 states and 9498 transitions. [2021-06-05 03:40:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:11,262 INFO L225 Difference]: With dead ends: 2570 [2021-06-05 03:40:11,262 INFO L226 Difference]: Without dead ends: 2363 [2021-06-05 03:40:11,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-06-05 03:40:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1346. [2021-06-05 03:40:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.9353159851301114) internal successors, (5293), 1345 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5293 transitions. [2021-06-05 03:40:11,297 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5293 transitions. Word has length 25 [2021-06-05 03:40:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:11,297 INFO L482 AbstractCegarLoop]: Abstraction has 1346 states and 5293 transitions. [2021-06-05 03:40:11,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5293 transitions. [2021-06-05 03:40:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:11,299 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:11,299 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:11,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-05 03:40:11,299 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1822121407, now seen corresponding path program 403 times [2021-06-05 03:40:11,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:11,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800073276] [2021-06-05 03:40:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:11,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:11,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800073276] [2021-06-05 03:40:11,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800073276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:11,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:11,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:11,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885980087] [2021-06-05 03:40:11,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:11,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:11,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:11,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:11,375 INFO L87 Difference]: Start difference. First operand 1346 states and 5293 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:11,454 INFO L93 Difference]: Finished difference Result 2915 states and 10741 transitions. [2021-06-05 03:40:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:11,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:11,459 INFO L225 Difference]: With dead ends: 2915 [2021-06-05 03:40:11,459 INFO L226 Difference]: Without dead ends: 2728 [2021-06-05 03:40:11,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2021-06-05 03:40:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1390. [2021-06-05 03:40:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.931605471562275) internal successors, (5461), 1389 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5461 transitions. [2021-06-05 03:40:11,496 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5461 transitions. Word has length 25 [2021-06-05 03:40:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:11,496 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5461 transitions. [2021-06-05 03:40:11,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5461 transitions. [2021-06-05 03:40:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:11,497 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:11,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:11,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-05 03:40:11,498 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:11,498 INFO L82 PathProgramCache]: Analyzing trace with hash 429976861, now seen corresponding path program 404 times [2021-06-05 03:40:11,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:11,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133486825] [2021-06-05 03:40:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:11,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:11,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133486825] [2021-06-05 03:40:11,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133486825] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:11,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:11,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:11,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328948626] [2021-06-05 03:40:11,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:11,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:11,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:11,592 INFO L87 Difference]: Start difference. First operand 1390 states and 5461 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:11,661 INFO L93 Difference]: Finished difference Result 2903 states and 10677 transitions. [2021-06-05 03:40:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:11,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:11,666 INFO L225 Difference]: With dead ends: 2903 [2021-06-05 03:40:11,666 INFO L226 Difference]: Without dead ends: 2704 [2021-06-05 03:40:11,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-06-05 03:40:11,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1366. [2021-06-05 03:40:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.936263736263736) internal successors, (5373), 1365 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5373 transitions. [2021-06-05 03:40:11,703 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5373 transitions. Word has length 25 [2021-06-05 03:40:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:11,703 INFO L482 AbstractCegarLoop]: Abstraction has 1366 states and 5373 transitions. [2021-06-05 03:40:11,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5373 transitions. [2021-06-05 03:40:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:11,705 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:11,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:11,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-05 03:40:11,705 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:11,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1085981, now seen corresponding path program 405 times [2021-06-05 03:40:11,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:11,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2206578] [2021-06-05 03:40:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:11,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:11,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2206578] [2021-06-05 03:40:11,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2206578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:11,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:11,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:11,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177640059] [2021-06-05 03:40:11,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:11,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:11,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:11,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:11,781 INFO L87 Difference]: Start difference. First operand 1366 states and 5373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:11,844 INFO L93 Difference]: Finished difference Result 2938 states and 10788 transitions. [2021-06-05 03:40:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:11,849 INFO L225 Difference]: With dead ends: 2938 [2021-06-05 03:40:11,849 INFO L226 Difference]: Without dead ends: 2751 [2021-06-05 03:40:11,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-06-05 03:40:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1412. [2021-06-05 03:40:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.919206236711552) internal successors, (5530), 1411 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5530 transitions. [2021-06-05 03:40:11,887 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5530 transitions. Word has length 25 [2021-06-05 03:40:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:11,887 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5530 transitions. [2021-06-05 03:40:11,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5530 transitions. [2021-06-05 03:40:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:11,889 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:11,889 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:11,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-05 03:40:11,889 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:11,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1369846429, now seen corresponding path program 406 times [2021-06-05 03:40:11,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:11,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68975518] [2021-06-05 03:40:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:11,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:11,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68975518] [2021-06-05 03:40:11,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68975518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:11,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:11,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:11,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453327588] [2021-06-05 03:40:11,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:11,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:11,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:11,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:11,965 INFO L87 Difference]: Start difference. First operand 1412 states and 5530 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:12,015 INFO L93 Difference]: Finished difference Result 2973 states and 10877 transitions. [2021-06-05 03:40:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:12,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:12,020 INFO L225 Difference]: With dead ends: 2973 [2021-06-05 03:40:12,021 INFO L226 Difference]: Without dead ends: 2705 [2021-06-05 03:40:12,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2021-06-05 03:40:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 1366. [2021-06-05 03:40:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.9216117216117214) internal successors, (5353), 1365 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5353 transitions. [2021-06-05 03:40:12,058 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5353 transitions. Word has length 25 [2021-06-05 03:40:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:12,058 INFO L482 AbstractCegarLoop]: Abstraction has 1366 states and 5353 transitions. [2021-06-05 03:40:12,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5353 transitions. [2021-06-05 03:40:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:12,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:12,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:12,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-05 03:40:12,060 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:12,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:12,060 INFO L82 PathProgramCache]: Analyzing trace with hash 365343355, now seen corresponding path program 407 times [2021-06-05 03:40:12,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:12,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906196417] [2021-06-05 03:40:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:12,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:12,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906196417] [2021-06-05 03:40:12,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906196417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:12,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:12,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:12,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061854925] [2021-06-05 03:40:12,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:12,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:12,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:12,145 INFO L87 Difference]: Start difference. First operand 1366 states and 5353 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:12,211 INFO L93 Difference]: Finished difference Result 2908 states and 10665 transitions. [2021-06-05 03:40:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:12,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:12,217 INFO L225 Difference]: With dead ends: 2908 [2021-06-05 03:40:12,217 INFO L226 Difference]: Without dead ends: 2733 [2021-06-05 03:40:12,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2021-06-05 03:40:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1406. [2021-06-05 03:40:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.9096085409252668) internal successors, (5493), 1405 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5493 transitions. [2021-06-05 03:40:12,257 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5493 transitions. Word has length 25 [2021-06-05 03:40:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:12,257 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 5493 transitions. [2021-06-05 03:40:12,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5493 transitions. [2021-06-05 03:40:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:12,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:12,259 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:12,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-05 03:40:12,260 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:12,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:12,260 INFO L82 PathProgramCache]: Analyzing trace with hash 583694941, now seen corresponding path program 408 times [2021-06-05 03:40:12,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:12,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77439348] [2021-06-05 03:40:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:12,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:12,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77439348] [2021-06-05 03:40:12,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77439348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:12,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:12,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:12,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865453464] [2021-06-05 03:40:12,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:12,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:12,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:12,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:12,347 INFO L87 Difference]: Start difference. First operand 1406 states and 5493 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:12,404 INFO L93 Difference]: Finished difference Result 2860 states and 10465 transitions. [2021-06-05 03:40:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:12,409 INFO L225 Difference]: With dead ends: 2860 [2021-06-05 03:40:12,409 INFO L226 Difference]: Without dead ends: 2570 [2021-06-05 03:40:12,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-06-05 03:40:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1338. [2021-06-05 03:40:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.9409124906507107) internal successors, (5269), 1337 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5269 transitions. [2021-06-05 03:40:12,446 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5269 transitions. Word has length 25 [2021-06-05 03:40:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:12,446 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5269 transitions. [2021-06-05 03:40:12,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5269 transitions. [2021-06-05 03:40:12,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:12,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:12,448 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:12,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-05 03:40:12,449 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:12,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:12,449 INFO L82 PathProgramCache]: Analyzing trace with hash 517434815, now seen corresponding path program 409 times [2021-06-05 03:40:12,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:12,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306271246] [2021-06-05 03:40:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:12,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:12,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306271246] [2021-06-05 03:40:12,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306271246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:12,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:12,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:12,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337182609] [2021-06-05 03:40:12,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:12,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:12,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:12,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:12,548 INFO L87 Difference]: Start difference. First operand 1338 states and 5269 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:12,600 INFO L93 Difference]: Finished difference Result 2810 states and 10302 transitions. [2021-06-05 03:40:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:12,606 INFO L225 Difference]: With dead ends: 2810 [2021-06-05 03:40:12,606 INFO L226 Difference]: Without dead ends: 2651 [2021-06-05 03:40:12,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-06-05 03:40:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 1370. [2021-06-05 03:40:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9306062819576333) internal successors, (5381), 1369 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5381 transitions. [2021-06-05 03:40:12,642 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5381 transitions. Word has length 25 [2021-06-05 03:40:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:12,642 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5381 transitions. [2021-06-05 03:40:12,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5381 transitions. [2021-06-05 03:40:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:12,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:12,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:12,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-05 03:40:12,644 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:12,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:12,644 INFO L82 PathProgramCache]: Analyzing trace with hash -490863169, now seen corresponding path program 410 times [2021-06-05 03:40:12,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:12,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286196367] [2021-06-05 03:40:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:12,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:12,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286196367] [2021-06-05 03:40:12,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286196367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:12,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:12,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:12,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507833914] [2021-06-05 03:40:12,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:12,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:12,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:12,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:12,743 INFO L87 Difference]: Start difference. First operand 1370 states and 5381 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:12,796 INFO L93 Difference]: Finished difference Result 2873 states and 10509 transitions. [2021-06-05 03:40:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:12,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:12,802 INFO L225 Difference]: With dead ends: 2873 [2021-06-05 03:40:12,802 INFO L226 Difference]: Without dead ends: 2619 [2021-06-05 03:40:12,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-06-05 03:40:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1338. [2021-06-05 03:40:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.9289454001495887) internal successors, (5253), 1337 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5253 transitions. [2021-06-05 03:40:12,840 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5253 transitions. Word has length 25 [2021-06-05 03:40:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:12,840 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5253 transitions. [2021-06-05 03:40:12,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5253 transitions. [2021-06-05 03:40:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:12,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:12,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:12,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-05 03:40:12,842 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:12,843 INFO L82 PathProgramCache]: Analyzing trace with hash 523187583, now seen corresponding path program 411 times [2021-06-05 03:40:12,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:12,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378300896] [2021-06-05 03:40:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:12,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:12,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378300896] [2021-06-05 03:40:12,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378300896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:12,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:12,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:12,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598368168] [2021-06-05 03:40:12,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:12,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:12,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:12,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:12,935 INFO L87 Difference]: Start difference. First operand 1338 states and 5253 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:12,991 INFO L93 Difference]: Finished difference Result 2755 states and 10091 transitions. [2021-06-05 03:40:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:12,996 INFO L225 Difference]: With dead ends: 2755 [2021-06-05 03:40:12,996 INFO L226 Difference]: Without dead ends: 2596 [2021-06-05 03:40:12,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2021-06-05 03:40:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1354. [2021-06-05 03:40:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.917960088691796) internal successors, (5301), 1353 states have internal predecessors, (5301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5301 transitions. [2021-06-05 03:40:13,032 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5301 transitions. Word has length 25 [2021-06-05 03:40:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:13,032 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5301 transitions. [2021-06-05 03:40:13,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5301 transitions. [2021-06-05 03:40:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:13,034 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:13,034 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:13,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-05 03:40:13,034 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2091283073, now seen corresponding path program 412 times [2021-06-05 03:40:13,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:13,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541093381] [2021-06-05 03:40:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:13,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:13,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541093381] [2021-06-05 03:40:13,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541093381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:13,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:13,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:13,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883028808] [2021-06-05 03:40:13,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:13,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:13,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:13,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:13,124 INFO L87 Difference]: Start difference. First operand 1354 states and 5301 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:13,191 INFO L93 Difference]: Finished difference Result 2779 states and 10167 transitions. [2021-06-05 03:40:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:13,196 INFO L225 Difference]: With dead ends: 2779 [2021-06-05 03:40:13,196 INFO L226 Difference]: Without dead ends: 2580 [2021-06-05 03:40:13,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-06-05 03:40:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1338. [2021-06-05 03:40:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.9229618548990275) internal successors, (5245), 1337 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5245 transitions. [2021-06-05 03:40:13,232 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5245 transitions. Word has length 25 [2021-06-05 03:40:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:13,232 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5245 transitions. [2021-06-05 03:40:13,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5245 transitions. [2021-06-05 03:40:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:13,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:13,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:13,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-05 03:40:13,234 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:13,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:13,234 INFO L82 PathProgramCache]: Analyzing trace with hash -403036801, now seen corresponding path program 413 times [2021-06-05 03:40:13,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:13,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128907188] [2021-06-05 03:40:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:13,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:13,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128907188] [2021-06-05 03:40:13,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128907188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:13,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:13,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:13,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753179354] [2021-06-05 03:40:13,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:13,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:13,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:13,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:13,337 INFO L87 Difference]: Start difference. First operand 1338 states and 5245 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:13,400 INFO L93 Difference]: Finished difference Result 2870 states and 10514 transitions. [2021-06-05 03:40:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:13,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:13,405 INFO L225 Difference]: With dead ends: 2870 [2021-06-05 03:40:13,405 INFO L226 Difference]: Without dead ends: 2687 [2021-06-05 03:40:13,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-06-05 03:40:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1382. [2021-06-05 03:40:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 3.9080376538740045) internal successors, (5397), 1381 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 5397 transitions. [2021-06-05 03:40:13,442 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 5397 transitions. Word has length 25 [2021-06-05 03:40:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:13,443 INFO L482 AbstractCegarLoop]: Abstraction has 1382 states and 5397 transitions. [2021-06-05 03:40:13,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 5397 transitions. [2021-06-05 03:40:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:13,444 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:13,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:13,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-05 03:40:13,445 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1407368739, now seen corresponding path program 414 times [2021-06-05 03:40:13,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:13,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505998786] [2021-06-05 03:40:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:13,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:13,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505998786] [2021-06-05 03:40:13,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505998786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:13,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:13,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:13,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039561344] [2021-06-05 03:40:13,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:13,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:13,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:13,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:13,548 INFO L87 Difference]: Start difference. First operand 1382 states and 5397 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:13,599 INFO L93 Difference]: Finished difference Result 2909 states and 10617 transitions. [2021-06-05 03:40:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:13,604 INFO L225 Difference]: With dead ends: 2909 [2021-06-05 03:40:13,604 INFO L226 Difference]: Without dead ends: 2627 [2021-06-05 03:40:13,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2021-06-05 03:40:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 1322. [2021-06-05 03:40:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.9280847842543527) internal successors, (5189), 1321 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 5189 transitions. [2021-06-05 03:40:13,640 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 5189 transitions. Word has length 25 [2021-06-05 03:40:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:13,640 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 5189 transitions. [2021-06-05 03:40:13,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 5189 transitions. [2021-06-05 03:40:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:13,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:13,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:13,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-06-05 03:40:13,642 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:13,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1975481885, now seen corresponding path program 415 times [2021-06-05 03:40:13,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:13,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942374993] [2021-06-05 03:40:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:13,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:13,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942374993] [2021-06-05 03:40:13,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942374993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:13,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:13,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:13,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970262619] [2021-06-05 03:40:13,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:13,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:13,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:13,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:13,745 INFO L87 Difference]: Start difference. First operand 1322 states and 5189 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:13,800 INFO L93 Difference]: Finished difference Result 2750 states and 10050 transitions. [2021-06-05 03:40:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:13,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:13,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:13,805 INFO L225 Difference]: With dead ends: 2750 [2021-06-05 03:40:13,805 INFO L226 Difference]: Without dead ends: 2591 [2021-06-05 03:40:13,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-06-05 03:40:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1322. [2021-06-05 03:40:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.915972747918244) internal successors, (5173), 1321 states have internal predecessors, (5173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 5173 transitions. [2021-06-05 03:40:13,841 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 5173 transitions. Word has length 25 [2021-06-05 03:40:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:13,841 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 5173 transitions. [2021-06-05 03:40:13,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 5173 transitions. [2021-06-05 03:40:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:13,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:13,843 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:13,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-06-05 03:40:13,843 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:13,843 INFO L82 PathProgramCache]: Analyzing trace with hash 967183901, now seen corresponding path program 416 times [2021-06-05 03:40:13,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:13,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334124332] [2021-06-05 03:40:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:13,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:13,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334124332] [2021-06-05 03:40:13,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334124332] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:13,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:13,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:13,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481716734] [2021-06-05 03:40:13,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:13,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:13,954 INFO L87 Difference]: Start difference. First operand 1322 states and 5173 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:14,002 INFO L93 Difference]: Finished difference Result 2813 states and 10257 transitions. [2021-06-05 03:40:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:14,008 INFO L225 Difference]: With dead ends: 2813 [2021-06-05 03:40:14,008 INFO L226 Difference]: Without dead ends: 2559 [2021-06-05 03:40:14,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-06-05 03:40:14,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1290. [2021-06-05 03:40:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.91388673390225) internal successors, (5045), 1289 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5045 transitions. [2021-06-05 03:40:14,042 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5045 transitions. Word has length 25 [2021-06-05 03:40:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:14,042 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5045 transitions. [2021-06-05 03:40:14,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5045 transitions. [2021-06-05 03:40:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:14,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:14,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:14,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-06-05 03:40:14,044 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash 276432255, now seen corresponding path program 417 times [2021-06-05 03:40:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:14,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797961488] [2021-06-05 03:40:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:14,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:14,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797961488] [2021-06-05 03:40:14,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797961488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:14,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:14,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:14,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475639266] [2021-06-05 03:40:14,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:14,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:14,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:14,136 INFO L87 Difference]: Start difference. First operand 1290 states and 5045 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:14,188 INFO L93 Difference]: Finished difference Result 2655 states and 9699 transitions. [2021-06-05 03:40:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:14,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:14,193 INFO L225 Difference]: With dead ends: 2655 [2021-06-05 03:40:14,193 INFO L226 Difference]: Without dead ends: 2496 [2021-06-05 03:40:14,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-06-05 03:40:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1306. [2021-06-05 03:40:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.9026819923371647) internal successors, (5093), 1305 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5093 transitions. [2021-06-05 03:40:14,227 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5093 transitions. Word has length 25 [2021-06-05 03:40:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:14,227 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5093 transitions. [2021-06-05 03:40:14,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5093 transitions. [2021-06-05 03:40:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:14,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:14,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:14,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-06-05 03:40:14,228 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1665839745, now seen corresponding path program 418 times [2021-06-05 03:40:14,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:14,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544595375] [2021-06-05 03:40:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:14,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:14,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544595375] [2021-06-05 03:40:14,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544595375] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:14,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:14,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:14,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331159639] [2021-06-05 03:40:14,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:14,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:14,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:14,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:14,321 INFO L87 Difference]: Start difference. First operand 1306 states and 5093 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:14,390 INFO L93 Difference]: Finished difference Result 2543 states and 9362 transitions. [2021-06-05 03:40:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:14,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:14,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:14,395 INFO L225 Difference]: With dead ends: 2543 [2021-06-05 03:40:14,395 INFO L226 Difference]: Without dead ends: 2352 [2021-06-05 03:40:14,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-05 03:40:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1290. [2021-06-05 03:40:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.9076803723816913) internal successors, (5037), 1289 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5037 transitions. [2021-06-05 03:40:14,428 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5037 transitions. Word has length 25 [2021-06-05 03:40:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:14,428 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5037 transitions. [2021-06-05 03:40:14,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5037 transitions. [2021-06-05 03:40:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:14,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:14,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:14,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-06-05 03:40:14,430 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash 22406527, now seen corresponding path program 419 times [2021-06-05 03:40:14,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:14,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652756979] [2021-06-05 03:40:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:14,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:14,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652756979] [2021-06-05 03:40:14,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652756979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:14,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:14,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:14,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359412182] [2021-06-05 03:40:14,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:14,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:14,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:14,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:14,533 INFO L87 Difference]: Start difference. First operand 1290 states and 5037 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:14,596 INFO L93 Difference]: Finished difference Result 2790 states and 10190 transitions. [2021-06-05 03:40:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:14,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:14,602 INFO L225 Difference]: With dead ends: 2790 [2021-06-05 03:40:14,602 INFO L226 Difference]: Without dead ends: 2615 [2021-06-05 03:40:14,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-06-05 03:40:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1330. [2021-06-05 03:40:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1329 states have (on average 3.8954100827689992) internal successors, (5177), 1329 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 5177 transitions. [2021-06-05 03:40:14,638 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 5177 transitions. Word has length 25 [2021-06-05 03:40:14,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:14,638 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 5177 transitions. [2021-06-05 03:40:14,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 5177 transitions. [2021-06-05 03:40:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:14,640 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:14,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:14,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-06-05 03:40:14,640 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:14,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1633117859, now seen corresponding path program 420 times [2021-06-05 03:40:14,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:14,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059882610] [2021-06-05 03:40:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:14,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:14,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059882610] [2021-06-05 03:40:14,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059882610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:14,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:14,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:14,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799168494] [2021-06-05 03:40:14,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:14,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:14,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:14,743 INFO L87 Difference]: Start difference. First operand 1330 states and 5177 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:14,793 INFO L93 Difference]: Finished difference Result 2742 states and 9990 transitions. [2021-06-05 03:40:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:14,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:14,798 INFO L225 Difference]: With dead ends: 2742 [2021-06-05 03:40:14,798 INFO L226 Difference]: Without dead ends: 2464 [2021-06-05 03:40:14,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2021-06-05 03:40:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1274. [2021-06-05 03:40:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.912804399057345) internal successors, (4981), 1273 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4981 transitions. [2021-06-05 03:40:14,831 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4981 transitions. Word has length 25 [2021-06-05 03:40:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:14,831 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4981 transitions. [2021-06-05 03:40:14,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4981 transitions. [2021-06-05 03:40:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:14,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:14,833 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:14,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-06-05 03:40:14,833 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash -227939009, now seen corresponding path program 421 times [2021-06-05 03:40:14,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:14,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387941269] [2021-06-05 03:40:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:14,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:14,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387941269] [2021-06-05 03:40:14,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387941269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:14,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:14,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:14,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144968557] [2021-06-05 03:40:14,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:14,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:14,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:14,918 INFO L87 Difference]: Start difference. First operand 1274 states and 4981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:14,971 INFO L93 Difference]: Finished difference Result 2600 states and 9504 transitions. [2021-06-05 03:40:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:14,976 INFO L225 Difference]: With dead ends: 2600 [2021-06-05 03:40:14,976 INFO L226 Difference]: Without dead ends: 2441 [2021-06-05 03:40:14,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2021-06-05 03:40:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1298. [2021-06-05 03:40:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.905165767154973) internal successors, (5065), 1297 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5065 transitions. [2021-06-05 03:40:15,009 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5065 transitions. Word has length 25 [2021-06-05 03:40:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:15,009 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5065 transitions. [2021-06-05 03:40:15,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5065 transitions. [2021-06-05 03:40:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:15,011 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:15,011 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:15,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-06-05 03:40:15,011 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1452557631, now seen corresponding path program 422 times [2021-06-05 03:40:15,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:15,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363772471] [2021-06-05 03:40:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:15,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:15,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363772471] [2021-06-05 03:40:15,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363772471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:15,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:15,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:15,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130705158] [2021-06-05 03:40:15,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:15,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:15,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:15,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:15,094 INFO L87 Difference]: Start difference. First operand 1298 states and 5065 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:15,159 INFO L93 Difference]: Finished difference Result 2624 states and 9580 transitions. [2021-06-05 03:40:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:15,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:15,164 INFO L225 Difference]: With dead ends: 2624 [2021-06-05 03:40:15,164 INFO L226 Difference]: Without dead ends: 2425 [2021-06-05 03:40:15,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-06-05 03:40:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1282. [2021-06-05 03:40:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.910226385636222) internal successors, (5009), 1281 states have internal predecessors, (5009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5009 transitions. [2021-06-05 03:40:15,198 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5009 transitions. Word has length 25 [2021-06-05 03:40:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:15,198 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 5009 transitions. [2021-06-05 03:40:15,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5009 transitions. [2021-06-05 03:40:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:15,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:15,200 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:15,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-06-05 03:40:15,200 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:15,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:15,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1074735971, now seen corresponding path program 423 times [2021-06-05 03:40:15,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:15,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884902406] [2021-06-05 03:40:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:15,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:15,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884902406] [2021-06-05 03:40:15,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884902406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:15,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:15,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:15,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55074353] [2021-06-05 03:40:15,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:15,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:15,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:15,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:15,284 INFO L87 Difference]: Start difference. First operand 1282 states and 5009 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:15,352 INFO L93 Difference]: Finished difference Result 2544 states and 9292 transitions. [2021-06-05 03:40:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:15,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:15,357 INFO L225 Difference]: With dead ends: 2544 [2021-06-05 03:40:15,357 INFO L226 Difference]: Without dead ends: 2385 [2021-06-05 03:40:15,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-06-05 03:40:15,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1298. [2021-06-05 03:40:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.8989976869699308) internal successors, (5057), 1297 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5057 transitions. [2021-06-05 03:40:15,391 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5057 transitions. Word has length 25 [2021-06-05 03:40:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:15,392 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5057 transitions. [2021-06-05 03:40:15,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5057 transitions. [2021-06-05 03:40:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:15,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:15,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:15,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-06-05 03:40:15,393 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash -432396993, now seen corresponding path program 424 times [2021-06-05 03:40:15,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:15,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154018907] [2021-06-05 03:40:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:15,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:15,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154018907] [2021-06-05 03:40:15,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154018907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:15,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:15,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:15,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423212299] [2021-06-05 03:40:15,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:15,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:15,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:15,479 INFO L87 Difference]: Start difference. First operand 1298 states and 5057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:15,541 INFO L93 Difference]: Finished difference Result 2432 states and 8955 transitions. [2021-06-05 03:40:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:15,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:15,545 INFO L225 Difference]: With dead ends: 2432 [2021-06-05 03:40:15,545 INFO L226 Difference]: Without dead ends: 2241 [2021-06-05 03:40:15,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-06-05 03:40:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1282. [2021-06-05 03:40:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.9039812646370025) internal successors, (5001), 1281 states have internal predecessors, (5001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5001 transitions. [2021-06-05 03:40:15,577 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5001 transitions. Word has length 25 [2021-06-05 03:40:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:15,577 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 5001 transitions. [2021-06-05 03:40:15,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5001 transitions. [2021-06-05 03:40:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:15,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:15,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:15,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-06-05 03:40:15,579 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:15,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1055027905, now seen corresponding path program 425 times [2021-06-05 03:40:15,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:15,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793094010] [2021-06-05 03:40:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:15,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:15,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793094010] [2021-06-05 03:40:15,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793094010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:15,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:15,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:15,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891297852] [2021-06-05 03:40:15,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:15,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:15,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:15,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:15,669 INFO L87 Difference]: Start difference. First operand 1282 states and 5001 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:15,732 INFO L93 Difference]: Finished difference Result 2448 states and 9027 transitions. [2021-06-05 03:40:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:15,736 INFO L225 Difference]: With dead ends: 2448 [2021-06-05 03:40:15,736 INFO L226 Difference]: Without dead ends: 2265 [2021-06-05 03:40:15,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2021-06-05 03:40:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1306. [2021-06-05 03:40:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.8904214559386974) internal successors, (5077), 1305 states have internal predecessors, (5077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5077 transitions. [2021-06-05 03:40:15,768 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5077 transitions. Word has length 25 [2021-06-05 03:40:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:15,768 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5077 transitions. [2021-06-05 03:40:15,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5077 transitions. [2021-06-05 03:40:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:15,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:15,769 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:15,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-06-05 03:40:15,770 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:15,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:15,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1196602397, now seen corresponding path program 426 times [2021-06-05 03:40:15,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:15,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570852165] [2021-06-05 03:40:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:15,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:15,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570852165] [2021-06-05 03:40:15,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570852165] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:15,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:15,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:15,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450175853] [2021-06-05 03:40:15,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:15,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:15,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:15,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:15,854 INFO L87 Difference]: Start difference. First operand 1306 states and 5077 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:15,917 INFO L93 Difference]: Finished difference Result 2264 states and 8414 transitions. [2021-06-05 03:40:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:15,921 INFO L225 Difference]: With dead ends: 2264 [2021-06-05 03:40:15,921 INFO L226 Difference]: Without dead ends: 2057 [2021-06-05 03:40:15,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-06-05 03:40:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1274. [2021-06-05 03:40:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.9096622152395915) internal successors, (4977), 1273 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4977 transitions. [2021-06-05 03:40:15,959 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4977 transitions. Word has length 25 [2021-06-05 03:40:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:15,959 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4977 transitions. [2021-06-05 03:40:15,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4977 transitions. [2021-06-05 03:40:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:15,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:15,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:15,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-06-05 03:40:15,961 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2146968895, now seen corresponding path program 427 times [2021-06-05 03:40:15,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:15,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11575178] [2021-06-05 03:40:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:16,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:16,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11575178] [2021-06-05 03:40:16,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11575178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:16,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:16,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:16,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781725826] [2021-06-05 03:40:16,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:16,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:16,057 INFO L87 Difference]: Start difference. First operand 1274 states and 4977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:16,119 INFO L93 Difference]: Finished difference Result 2823 states and 10363 transitions. [2021-06-05 03:40:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:16,124 INFO L225 Difference]: With dead ends: 2823 [2021-06-05 03:40:16,124 INFO L226 Difference]: Without dead ends: 2640 [2021-06-05 03:40:16,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-06-05 03:40:16,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1318. [2021-06-05 03:40:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 3.906605922551253) internal successors, (5145), 1317 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 5145 transitions. [2021-06-05 03:40:16,158 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 5145 transitions. Word has length 25 [2021-06-05 03:40:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:16,158 INFO L482 AbstractCegarLoop]: Abstraction has 1318 states and 5145 transitions. [2021-06-05 03:40:16,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 5145 transitions. [2021-06-05 03:40:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:16,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:16,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:16,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-06-05 03:40:16,160 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:16,160 INFO L82 PathProgramCache]: Analyzing trace with hash 103631901, now seen corresponding path program 428 times [2021-06-05 03:40:16,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:16,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105703202] [2021-06-05 03:40:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:16,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:16,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105703202] [2021-06-05 03:40:16,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105703202] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:16,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:16,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:16,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183340402] [2021-06-05 03:40:16,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:16,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:16,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:16,251 INFO L87 Difference]: Start difference. First operand 1318 states and 5145 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:16,318 INFO L93 Difference]: Finished difference Result 2815 states and 10311 transitions. [2021-06-05 03:40:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:16,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:16,323 INFO L225 Difference]: With dead ends: 2815 [2021-06-05 03:40:16,323 INFO L226 Difference]: Without dead ends: 2616 [2021-06-05 03:40:16,323 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-06-05 03:40:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1294. [2021-06-05 03:40:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9110595514307813) internal successors, (5057), 1293 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5057 transitions. [2021-06-05 03:40:16,357 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5057 transitions. Word has length 25 [2021-06-05 03:40:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:16,357 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5057 transitions. [2021-06-05 03:40:16,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5057 transitions. [2021-06-05 03:40:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:16,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:16,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:16,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-06-05 03:40:16,359 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:16,359 INFO L82 PathProgramCache]: Analyzing trace with hash 325933469, now seen corresponding path program 429 times [2021-06-05 03:40:16,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:16,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563637356] [2021-06-05 03:40:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:16,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:16,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563637356] [2021-06-05 03:40:16,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563637356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:16,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:16,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:16,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85600115] [2021-06-05 03:40:16,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:16,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:16,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:16,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:16,488 INFO L87 Difference]: Start difference. First operand 1294 states and 5057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:16,559 INFO L93 Difference]: Finished difference Result 2751 states and 10075 transitions. [2021-06-05 03:40:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:16,564 INFO L225 Difference]: With dead ends: 2751 [2021-06-05 03:40:16,565 INFO L226 Difference]: Without dead ends: 2568 [2021-06-05 03:40:16,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:16,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-06-05 03:40:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1338. [2021-06-05 03:40:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.8960359012715036) internal successors, (5209), 1337 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5209 transitions. [2021-06-05 03:40:16,601 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5209 transitions. Word has length 25 [2021-06-05 03:40:16,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:16,601 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5209 transitions. [2021-06-05 03:40:16,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5209 transitions. [2021-06-05 03:40:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:16,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:16,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:16,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-06-05 03:40:16,603 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1043501469, now seen corresponding path program 430 times [2021-06-05 03:40:16,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:16,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403841494] [2021-06-05 03:40:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:16,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:16,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403841494] [2021-06-05 03:40:16,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403841494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:16,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:16,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:16,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709848600] [2021-06-05 03:40:16,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:16,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:16,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:16,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:16,708 INFO L87 Difference]: Start difference. First operand 1338 states and 5209 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:16,760 INFO L93 Difference]: Finished difference Result 2790 states and 10178 transitions. [2021-06-05 03:40:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:16,765 INFO L225 Difference]: With dead ends: 2790 [2021-06-05 03:40:16,765 INFO L226 Difference]: Without dead ends: 2524 [2021-06-05 03:40:16,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2021-06-05 03:40:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 1294. [2021-06-05 03:40:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.8955916473317864) internal successors, (5037), 1293 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5037 transitions. [2021-06-05 03:40:16,798 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5037 transitions. Word has length 25 [2021-06-05 03:40:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:16,798 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5037 transitions. [2021-06-05 03:40:16,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5037 transitions. [2021-06-05 03:40:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:16,800 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:16,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:16,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-06-05 03:40:16,800 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:16,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1308281083, now seen corresponding path program 431 times [2021-06-05 03:40:16,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:16,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529599285] [2021-06-05 03:40:16,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:16,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:16,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529599285] [2021-06-05 03:40:16,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529599285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:16,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:16,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:16,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176494926] [2021-06-05 03:40:16,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:16,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:16,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:16,902 INFO L87 Difference]: Start difference. First operand 1294 states and 5037 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:16,972 INFO L93 Difference]: Finished difference Result 2691 states and 9819 transitions. [2021-06-05 03:40:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:16,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:16,977 INFO L225 Difference]: With dead ends: 2691 [2021-06-05 03:40:16,977 INFO L226 Difference]: Without dead ends: 2516 [2021-06-05 03:40:16,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-06-05 03:40:17,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1334. [2021-06-05 03:40:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 3.883720930232558) internal successors, (5177), 1333 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 5177 transitions. [2021-06-05 03:40:17,012 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 5177 transitions. Word has length 25 [2021-06-05 03:40:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:17,012 INFO L482 AbstractCegarLoop]: Abstraction has 1334 states and 5177 transitions. [2021-06-05 03:40:17,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 5177 transitions. [2021-06-05 03:40:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:17,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:17,013 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:17,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-06-05 03:40:17,014 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:17,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:17,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1526632669, now seen corresponding path program 432 times [2021-06-05 03:40:17,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:17,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953160799] [2021-06-05 03:40:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:17,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:17,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953160799] [2021-06-05 03:40:17,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953160799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:17,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:17,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:17,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440617955] [2021-06-05 03:40:17,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:17,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:17,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:17,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:17,114 INFO L87 Difference]: Start difference. First operand 1334 states and 5177 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:17,174 INFO L93 Difference]: Finished difference Result 2643 states and 9619 transitions. [2021-06-05 03:40:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:17,179 INFO L225 Difference]: With dead ends: 2643 [2021-06-05 03:40:17,179 INFO L226 Difference]: Without dead ends: 2353 [2021-06-05 03:40:17,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-06-05 03:40:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1266. [2021-06-05 03:40:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 3.915415019762846) internal successors, (4953), 1265 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 4953 transitions. [2021-06-05 03:40:17,217 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 4953 transitions. Word has length 25 [2021-06-05 03:40:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:17,217 INFO L482 AbstractCegarLoop]: Abstraction has 1266 states and 4953 transitions. [2021-06-05 03:40:17,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 4953 transitions. [2021-06-05 03:40:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:17,219 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:17,219 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:17,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-06-05 03:40:17,219 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:17,219 INFO L82 PathProgramCache]: Analyzing trace with hash -862211999, now seen corresponding path program 433 times [2021-06-05 03:40:17,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:17,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541952958] [2021-06-05 03:40:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:17,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:17,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541952958] [2021-06-05 03:40:17,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541952958] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:17,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:17,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:17,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512485951] [2021-06-05 03:40:17,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:17,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:17,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:17,307 INFO L87 Difference]: Start difference. First operand 1266 states and 4953 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:17,366 INFO L93 Difference]: Finished difference Result 2549 states and 9317 transitions. [2021-06-05 03:40:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:17,371 INFO L225 Difference]: With dead ends: 2549 [2021-06-05 03:40:17,371 INFO L226 Difference]: Without dead ends: 2390 [2021-06-05 03:40:17,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-06-05 03:40:17,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1294. [2021-06-05 03:40:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9110595514307813) internal successors, (5057), 1293 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5057 transitions. [2021-06-05 03:40:17,403 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5057 transitions. Word has length 25 [2021-06-05 03:40:17,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:17,404 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5057 transitions. [2021-06-05 03:40:17,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5057 transitions. [2021-06-05 03:40:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:17,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:17,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:17,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-06-05 03:40:17,405 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:17,406 INFO L82 PathProgramCache]: Analyzing trace with hash 146085985, now seen corresponding path program 434 times [2021-06-05 03:40:17,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:17,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624121278] [2021-06-05 03:40:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:17,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:17,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624121278] [2021-06-05 03:40:17,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624121278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:17,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:17,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:17,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417610169] [2021-06-05 03:40:17,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:17,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:17,493 INFO L87 Difference]: Start difference. First operand 1294 states and 5057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:17,561 INFO L93 Difference]: Finished difference Result 2577 states and 9405 transitions. [2021-06-05 03:40:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:17,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:17,565 INFO L225 Difference]: With dead ends: 2577 [2021-06-05 03:40:17,566 INFO L226 Difference]: Without dead ends: 2374 [2021-06-05 03:40:17,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-06-05 03:40:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1278. [2021-06-05 03:40:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.9162098668754894) internal successors, (5001), 1277 states have internal predecessors, (5001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 5001 transitions. [2021-06-05 03:40:17,598 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 5001 transitions. Word has length 25 [2021-06-05 03:40:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:17,598 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 5001 transitions. [2021-06-05 03:40:17,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 5001 transitions. [2021-06-05 03:40:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:17,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:17,599 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:17,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-06-05 03:40:17,599 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:17,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1709008961, now seen corresponding path program 435 times [2021-06-05 03:40:17,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:17,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749344890] [2021-06-05 03:40:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:17,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:17,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749344890] [2021-06-05 03:40:17,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749344890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:17,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:17,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:17,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339878602] [2021-06-05 03:40:17,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:17,686 INFO L87 Difference]: Start difference. First operand 1278 states and 5001 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:17,745 INFO L93 Difference]: Finished difference Result 2545 states and 9297 transitions. [2021-06-05 03:40:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:17,750 INFO L225 Difference]: With dead ends: 2545 [2021-06-05 03:40:17,750 INFO L226 Difference]: Without dead ends: 2386 [2021-06-05 03:40:17,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-06-05 03:40:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1294. [2021-06-05 03:40:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9048723897911835) internal successors, (5049), 1293 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5049 transitions. [2021-06-05 03:40:17,782 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5049 transitions. Word has length 25 [2021-06-05 03:40:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:17,782 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5049 transitions. [2021-06-05 03:40:17,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5049 transitions. [2021-06-05 03:40:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:17,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:17,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:17,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-06-05 03:40:17,784 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:17,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1738868639, now seen corresponding path program 436 times [2021-06-05 03:40:17,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:17,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351347177] [2021-06-05 03:40:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:17,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:17,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351347177] [2021-06-05 03:40:17,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351347177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:17,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:17,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:17,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623351337] [2021-06-05 03:40:17,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:17,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:17,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:17,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:17,862 INFO L87 Difference]: Start difference. First operand 1294 states and 5049 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:17,927 INFO L93 Difference]: Finished difference Result 2569 states and 9373 transitions. [2021-06-05 03:40:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:17,932 INFO L225 Difference]: With dead ends: 2569 [2021-06-05 03:40:17,932 INFO L226 Difference]: Without dead ends: 2370 [2021-06-05 03:40:17,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2021-06-05 03:40:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1278. [2021-06-05 03:40:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.9099451840250588) internal successors, (4993), 1277 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4993 transitions. [2021-06-05 03:40:17,964 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4993 transitions. Word has length 25 [2021-06-05 03:40:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:17,964 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4993 transitions. [2021-06-05 03:40:17,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4993 transitions. [2021-06-05 03:40:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:17,966 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:17,966 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:17,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-06-05 03:40:17,966 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:17,966 INFO L82 PathProgramCache]: Analyzing trace with hash 195653729, now seen corresponding path program 437 times [2021-06-05 03:40:17,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:17,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338665511] [2021-06-05 03:40:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:18,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:18,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338665511] [2021-06-05 03:40:18,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338665511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:18,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:18,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:18,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172991410] [2021-06-05 03:40:18,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:18,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:18,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:18,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:18,054 INFO L87 Difference]: Start difference. First operand 1278 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:18,120 INFO L93 Difference]: Finished difference Result 2613 states and 9549 transitions. [2021-06-05 03:40:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:18,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:18,125 INFO L225 Difference]: With dead ends: 2613 [2021-06-05 03:40:18,125 INFO L226 Difference]: Without dead ends: 2426 [2021-06-05 03:40:18,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-06-05 03:40:18,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1306. [2021-06-05 03:40:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.893486590038314) internal successors, (5081), 1305 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5081 transitions. [2021-06-05 03:40:18,158 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5081 transitions. Word has length 25 [2021-06-05 03:40:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:18,158 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5081 transitions. [2021-06-05 03:40:18,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5081 transitions. [2021-06-05 03:40:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:18,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:18,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:18,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-06-05 03:40:18,160 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:18,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:18,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1847683265, now seen corresponding path program 438 times [2021-06-05 03:40:18,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:18,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380370596] [2021-06-05 03:40:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:18,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:18,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380370596] [2021-06-05 03:40:18,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380370596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:18,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:18,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:18,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180259327] [2021-06-05 03:40:18,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:18,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:18,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:18,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:18,237 INFO L87 Difference]: Start difference. First operand 1306 states and 5081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:18,306 INFO L93 Difference]: Finished difference Result 2609 states and 9509 transitions. [2021-06-05 03:40:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:18,311 INFO L225 Difference]: With dead ends: 2609 [2021-06-05 03:40:18,311 INFO L226 Difference]: Without dead ends: 2390 [2021-06-05 03:40:18,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-06-05 03:40:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1270. [2021-06-05 03:40:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9156816390858946) internal successors, (4969), 1269 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4969 transitions. [2021-06-05 03:40:18,343 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4969 transitions. Word has length 25 [2021-06-05 03:40:18,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:18,344 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4969 transitions. [2021-06-05 03:40:18,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4969 transitions. [2021-06-05 03:40:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:18,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:18,345 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:18,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-06-05 03:40:18,345 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:18,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1409693759, now seen corresponding path program 439 times [2021-06-05 03:40:18,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:18,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783119229] [2021-06-05 03:40:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:18,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:18,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783119229] [2021-06-05 03:40:18,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783119229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:18,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:18,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:18,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764413275] [2021-06-05 03:40:18,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:18,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:18,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:18,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:18,445 INFO L87 Difference]: Start difference. First operand 1270 states and 4969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:18,505 INFO L93 Difference]: Finished difference Result 2513 states and 9169 transitions. [2021-06-05 03:40:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:18,510 INFO L225 Difference]: With dead ends: 2513 [2021-06-05 03:40:18,510 INFO L226 Difference]: Without dead ends: 2354 [2021-06-05 03:40:18,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-06-05 03:40:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1294. [2021-06-05 03:40:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.907965970610982) internal successors, (5053), 1293 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5053 transitions. [2021-06-05 03:40:18,542 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5053 transitions. Word has length 25 [2021-06-05 03:40:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:18,543 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5053 transitions. [2021-06-05 03:40:18,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5053 transitions. [2021-06-05 03:40:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:18,544 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:18,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:18,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-06-05 03:40:18,544 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:18,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:18,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1876975553, now seen corresponding path program 440 times [2021-06-05 03:40:18,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:18,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309835559] [2021-06-05 03:40:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:18,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:18,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309835559] [2021-06-05 03:40:18,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309835559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:18,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:18,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:18,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344056533] [2021-06-05 03:40:18,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:18,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:18,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:18,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:18,630 INFO L87 Difference]: Start difference. First operand 1294 states and 5053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:18,694 INFO L93 Difference]: Finished difference Result 2541 states and 9257 transitions. [2021-06-05 03:40:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:18,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:18,698 INFO L225 Difference]: With dead ends: 2541 [2021-06-05 03:40:18,698 INFO L226 Difference]: Without dead ends: 2338 [2021-06-05 03:40:18,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-06-05 03:40:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1278. [2021-06-05 03:40:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.913077525450274) internal successors, (4997), 1277 states have internal predecessors, (4997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4997 transitions. [2021-06-05 03:40:18,730 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4997 transitions. Word has length 25 [2021-06-05 03:40:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:18,730 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4997 transitions. [2021-06-05 03:40:18,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4997 transitions. [2021-06-05 03:40:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:18,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:18,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:18,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-06-05 03:40:18,732 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:18,732 INFO L82 PathProgramCache]: Analyzing trace with hash 613666879, now seen corresponding path program 441 times [2021-06-05 03:40:18,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:18,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440297785] [2021-06-05 03:40:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:18,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:18,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440297785] [2021-06-05 03:40:18,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440297785] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:18,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:18,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:18,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547447482] [2021-06-05 03:40:18,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:18,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:18,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:18,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:18,811 INFO L87 Difference]: Start difference. First operand 1278 states and 4997 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:18,859 INFO L93 Difference]: Finished difference Result 2469 states and 9009 transitions. [2021-06-05 03:40:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:18,863 INFO L225 Difference]: With dead ends: 2469 [2021-06-05 03:40:18,863 INFO L226 Difference]: Without dead ends: 2310 [2021-06-05 03:40:18,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-06-05 03:40:18,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1294. [2021-06-05 03:40:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9017788089713843) internal successors, (5045), 1293 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5045 transitions. [2021-06-05 03:40:18,895 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5045 transitions. Word has length 25 [2021-06-05 03:40:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:18,895 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5045 transitions. [2021-06-05 03:40:18,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5045 transitions. [2021-06-05 03:40:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:18,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:18,897 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:18,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-06-05 03:40:18,897 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:18,897 INFO L82 PathProgramCache]: Analyzing trace with hash -31864735, now seen corresponding path program 442 times [2021-06-05 03:40:18,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:18,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39533158] [2021-06-05 03:40:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:18,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:18,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39533158] [2021-06-05 03:40:18,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39533158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:18,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:18,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:18,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074531316] [2021-06-05 03:40:18,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:18,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:18,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:18,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:18,996 INFO L87 Difference]: Start difference. First operand 1294 states and 5045 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:19,057 INFO L93 Difference]: Finished difference Result 2357 states and 8672 transitions. [2021-06-05 03:40:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:19,061 INFO L225 Difference]: With dead ends: 2357 [2021-06-05 03:40:19,061 INFO L226 Difference]: Without dead ends: 2166 [2021-06-05 03:40:19,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-06-05 03:40:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1278. [2021-06-05 03:40:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.906812842599843) internal successors, (4989), 1277 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4989 transitions. [2021-06-05 03:40:19,093 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4989 transitions. Word has length 25 [2021-06-05 03:40:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:19,093 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4989 transitions. [2021-06-05 03:40:19,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4989 transitions. [2021-06-05 03:40:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:19,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:19,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:19,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-06-05 03:40:19,094 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1230458977, now seen corresponding path program 443 times [2021-06-05 03:40:19,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:19,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094410254] [2021-06-05 03:40:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:19,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:19,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094410254] [2021-06-05 03:40:19,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094410254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:19,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:19,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:19,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140777117] [2021-06-05 03:40:19,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:19,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:19,169 INFO L87 Difference]: Start difference. First operand 1278 states and 4989 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:19,229 INFO L93 Difference]: Finished difference Result 2505 states and 9141 transitions. [2021-06-05 03:40:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:19,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:19,233 INFO L225 Difference]: With dead ends: 2505 [2021-06-05 03:40:19,233 INFO L226 Difference]: Without dead ends: 2318 [2021-06-05 03:40:19,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-06-05 03:40:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1302. [2021-06-05 03:40:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 3.8931591083781707) internal successors, (5065), 1301 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 5065 transitions. [2021-06-05 03:40:19,266 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 5065 transitions. Word has length 25 [2021-06-05 03:40:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:19,266 INFO L482 AbstractCegarLoop]: Abstraction has 1302 states and 5065 transitions. [2021-06-05 03:40:19,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 5065 transitions. [2021-06-05 03:40:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:19,268 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:19,268 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:19,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-06-05 03:40:19,269 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash -161685569, now seen corresponding path program 444 times [2021-06-05 03:40:19,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:19,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320519674] [2021-06-05 03:40:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:19,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:19,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320519674] [2021-06-05 03:40:19,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320519674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:19,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:19,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:19,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259040900] [2021-06-05 03:40:19,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:19,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:19,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:19,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:19,350 INFO L87 Difference]: Start difference. First operand 1302 states and 5065 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:19,411 INFO L93 Difference]: Finished difference Result 2365 states and 8692 transitions. [2021-06-05 03:40:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:19,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:19,415 INFO L225 Difference]: With dead ends: 2365 [2021-06-05 03:40:19,415 INFO L226 Difference]: Without dead ends: 2158 [2021-06-05 03:40:19,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:19,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-06-05 03:40:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1270. [2021-06-05 03:40:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9125295508274234) internal successors, (4965), 1269 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4965 transitions. [2021-06-05 03:40:19,446 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4965 transitions. Word has length 25 [2021-06-05 03:40:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:19,446 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4965 transitions. [2021-06-05 03:40:19,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4965 transitions. [2021-06-05 03:40:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:19,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:19,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:19,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-06-05 03:40:19,447 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash 552945693, now seen corresponding path program 445 times [2021-06-05 03:40:19,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:19,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41925884] [2021-06-05 03:40:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:19,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:19,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41925884] [2021-06-05 03:40:19,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41925884] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:19,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:19,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:19,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933230928] [2021-06-05 03:40:19,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:19,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:19,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:19,526 INFO L87 Difference]: Start difference. First operand 1270 states and 4965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:19,572 INFO L93 Difference]: Finished difference Result 2449 states and 8929 transitions. [2021-06-05 03:40:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:19,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:19,576 INFO L225 Difference]: With dead ends: 2449 [2021-06-05 03:40:19,576 INFO L226 Difference]: Without dead ends: 2290 [2021-06-05 03:40:19,576 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2021-06-05 03:40:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1294. [2021-06-05 03:40:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9048723897911835) internal successors, (5049), 1293 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5049 transitions. [2021-06-05 03:40:19,608 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5049 transitions. Word has length 25 [2021-06-05 03:40:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:19,609 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5049 transitions. [2021-06-05 03:40:19,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5049 transitions. [2021-06-05 03:40:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:19,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:19,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:19,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-06-05 03:40:19,610 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash 523086015, now seen corresponding path program 446 times [2021-06-05 03:40:19,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:19,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078339905] [2021-06-05 03:40:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:19,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:19,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078339905] [2021-06-05 03:40:19,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078339905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:19,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:19,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:19,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912999653] [2021-06-05 03:40:19,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:19,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:19,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:19,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:19,687 INFO L87 Difference]: Start difference. First operand 1294 states and 5049 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:19,746 INFO L93 Difference]: Finished difference Result 2473 states and 9005 transitions. [2021-06-05 03:40:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:19,750 INFO L225 Difference]: With dead ends: 2473 [2021-06-05 03:40:19,750 INFO L226 Difference]: Without dead ends: 2274 [2021-06-05 03:40:19,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-06-05 03:40:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1278. [2021-06-05 03:40:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.9099451840250588) internal successors, (4993), 1277 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4993 transitions. [2021-06-05 03:40:19,782 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4993 transitions. Word has length 25 [2021-06-05 03:40:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:19,782 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4993 transitions. [2021-06-05 03:40:19,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4993 transitions. [2021-06-05 03:40:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:19,783 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:19,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:19,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-06-05 03:40:19,783 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash 72043647, now seen corresponding path program 447 times [2021-06-05 03:40:19,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:19,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915764229] [2021-06-05 03:40:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:19,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:19,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915764229] [2021-06-05 03:40:19,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915764229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:19,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:19,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:19,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504050156] [2021-06-05 03:40:19,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:19,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:19,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:19,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:19,870 INFO L87 Difference]: Start difference. First operand 1278 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:19,918 INFO L93 Difference]: Finished difference Result 2393 states and 8717 transitions. [2021-06-05 03:40:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:19,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:19,922 INFO L225 Difference]: With dead ends: 2393 [2021-06-05 03:40:19,922 INFO L226 Difference]: Without dead ends: 2234 [2021-06-05 03:40:19,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-06-05 03:40:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1294. [2021-06-05 03:40:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.8986852281515856) internal successors, (5041), 1293 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5041 transitions. [2021-06-05 03:40:19,953 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5041 transitions. Word has length 25 [2021-06-05 03:40:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:19,953 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5041 transitions. [2021-06-05 03:40:19,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5041 transitions. [2021-06-05 03:40:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:19,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:19,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:19,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-06-05 03:40:19,955 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2054926273, now seen corresponding path program 448 times [2021-06-05 03:40:19,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:19,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711289322] [2021-06-05 03:40:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:20,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:20,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711289322] [2021-06-05 03:40:20,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711289322] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:20,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:20,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:20,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072256806] [2021-06-05 03:40:20,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:20,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:20,033 INFO L87 Difference]: Start difference. First operand 1294 states and 5041 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:20,098 INFO L93 Difference]: Finished difference Result 2281 states and 8380 transitions. [2021-06-05 03:40:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:20,103 INFO L225 Difference]: With dead ends: 2281 [2021-06-05 03:40:20,103 INFO L226 Difference]: Without dead ends: 2090 [2021-06-05 03:40:20,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-06-05 03:40:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1278. [2021-06-05 03:40:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.903680501174628) internal successors, (4985), 1277 states have internal predecessors, (4985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4985 transitions. [2021-06-05 03:40:20,134 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4985 transitions. Word has length 25 [2021-06-05 03:40:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:20,134 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4985 transitions. [2021-06-05 03:40:20,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4985 transitions. [2021-06-05 03:40:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:20,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:20,136 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:20,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-06-05 03:40:20,136 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1357504415, now seen corresponding path program 449 times [2021-06-05 03:40:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:20,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624731115] [2021-06-05 03:40:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:20,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:20,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624731115] [2021-06-05 03:40:20,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624731115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:20,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:20,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:20,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351257249] [2021-06-05 03:40:20,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:20,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:20,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:20,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:20,214 INFO L87 Difference]: Start difference. First operand 1278 states and 4985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:20,278 INFO L93 Difference]: Finished difference Result 2297 states and 8452 transitions. [2021-06-05 03:40:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:20,282 INFO L225 Difference]: With dead ends: 2297 [2021-06-05 03:40:20,283 INFO L226 Difference]: Without dead ends: 2114 [2021-06-05 03:40:20,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2021-06-05 03:40:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1302. [2021-06-05 03:40:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 3.890084550345888) internal successors, (5061), 1301 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 5061 transitions. [2021-06-05 03:40:20,313 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 5061 transitions. Word has length 25 [2021-06-05 03:40:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:20,313 INFO L482 AbstractCegarLoop]: Abstraction has 1302 states and 5061 transitions. [2021-06-05 03:40:20,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 5061 transitions. [2021-06-05 03:40:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:20,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:20,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:20,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-06-05 03:40:20,315 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash 894125887, now seen corresponding path program 450 times [2021-06-05 03:40:20,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:20,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342998388] [2021-06-05 03:40:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:20,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:20,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342998388] [2021-06-05 03:40:20,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342998388] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:20,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:20,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:20,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137681365] [2021-06-05 03:40:20,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:20,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:20,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:20,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:20,428 INFO L87 Difference]: Start difference. First operand 1302 states and 5061 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:20,497 INFO L93 Difference]: Finished difference Result 2113 states and 7839 transitions. [2021-06-05 03:40:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:20,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:20,502 INFO L225 Difference]: With dead ends: 2113 [2021-06-05 03:40:20,502 INFO L226 Difference]: Without dead ends: 1906 [2021-06-05 03:40:20,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-06-05 03:40:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1270. [2021-06-05 03:40:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.909377462568952) internal successors, (4961), 1269 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2021-06-05 03:40:20,545 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2021-06-05 03:40:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:20,545 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2021-06-05 03:40:20,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2021-06-05 03:40:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:20,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:20,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:20,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-06-05 03:40:20,547 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:20,547 INFO L82 PathProgramCache]: Analyzing trace with hash -117393311, now seen corresponding path program 451 times [2021-06-05 03:40:20,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:20,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097757591] [2021-06-05 03:40:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:20,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:20,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097757591] [2021-06-05 03:40:20,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097757591] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:20,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:20,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:20,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154471948] [2021-06-05 03:40:20,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:20,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:20,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:20,637 INFO L87 Difference]: Start difference. First operand 1270 states and 4961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:20,703 INFO L93 Difference]: Finished difference Result 2345 states and 8652 transitions. [2021-06-05 03:40:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:20,707 INFO L225 Difference]: With dead ends: 2345 [2021-06-05 03:40:20,707 INFO L226 Difference]: Without dead ends: 2158 [2021-06-05 03:40:20,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-06-05 03:40:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1310. [2021-06-05 03:40:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 3.8999236058059585) internal successors, (5105), 1309 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 5105 transitions. [2021-06-05 03:40:20,738 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 5105 transitions. Word has length 25 [2021-06-05 03:40:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:20,738 INFO L482 AbstractCegarLoop]: Abstraction has 1310 states and 5105 transitions. [2021-06-05 03:40:20,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 5105 transitions. [2021-06-05 03:40:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:20,740 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:20,740 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:20,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-06-05 03:40:20,740 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2134236991, now seen corresponding path program 452 times [2021-06-05 03:40:20,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:20,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771114992] [2021-06-05 03:40:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:20,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:20,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771114992] [2021-06-05 03:40:20,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771114992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:20,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:20,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:20,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463547372] [2021-06-05 03:40:20,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:20,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:20,817 INFO L87 Difference]: Start difference. First operand 1310 states and 5105 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:20,874 INFO L93 Difference]: Finished difference Result 2341 states and 8612 transitions. [2021-06-05 03:40:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:20,878 INFO L225 Difference]: With dead ends: 2341 [2021-06-05 03:40:20,878 INFO L226 Difference]: Without dead ends: 2130 [2021-06-05 03:40:20,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2021-06-05 03:40:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1282. [2021-06-05 03:40:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.907103825136612) internal successors, (5005), 1281 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5005 transitions. [2021-06-05 03:40:20,908 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5005 transitions. Word has length 25 [2021-06-05 03:40:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:20,908 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 5005 transitions. [2021-06-05 03:40:20,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:20,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5005 transitions. [2021-06-05 03:40:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:20,910 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:20,910 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:20,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-06-05 03:40:20,910 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:20,910 INFO L82 PathProgramCache]: Analyzing trace with hash -964190273, now seen corresponding path program 453 times [2021-06-05 03:40:20,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:20,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044477107] [2021-06-05 03:40:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:20,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:20,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044477107] [2021-06-05 03:40:20,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044477107] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:20,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:20,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:20,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611222678] [2021-06-05 03:40:20,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:20,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:20,988 INFO L87 Difference]: Start difference. First operand 1282 states and 5005 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:21,048 INFO L93 Difference]: Finished difference Result 2257 states and 8308 transitions. [2021-06-05 03:40:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:21,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:21,052 INFO L225 Difference]: With dead ends: 2257 [2021-06-05 03:40:21,052 INFO L226 Difference]: Without dead ends: 2070 [2021-06-05 03:40:21,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-06-05 03:40:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1306. [2021-06-05 03:40:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.893486590038314) internal successors, (5081), 1305 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5081 transitions. [2021-06-05 03:40:21,091 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5081 transitions. Word has length 25 [2021-06-05 03:40:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:21,091 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5081 transitions. [2021-06-05 03:40:21,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5081 transitions. [2021-06-05 03:40:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:21,093 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:21,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:21,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-06-05 03:40:21,093 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash 228276159, now seen corresponding path program 454 times [2021-06-05 03:40:21,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:21,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738001133] [2021-06-05 03:40:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:21,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:21,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738001133] [2021-06-05 03:40:21,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738001133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:21,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:21,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:21,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341290091] [2021-06-05 03:40:21,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:21,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:21,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:21,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:21,171 INFO L87 Difference]: Start difference. First operand 1306 states and 5081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:21,230 INFO L93 Difference]: Finished difference Result 2117 states and 7859 transitions. [2021-06-05 03:40:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:21,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:21,234 INFO L225 Difference]: With dead ends: 2117 [2021-06-05 03:40:21,234 INFO L226 Difference]: Without dead ends: 1918 [2021-06-05 03:40:21,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2021-06-05 03:40:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1282. [2021-06-05 03:40:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.897736143637783) internal successors, (4993), 1281 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4993 transitions. [2021-06-05 03:40:21,264 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4993 transitions. Word has length 25 [2021-06-05 03:40:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:21,264 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 4993 transitions. [2021-06-05 03:40:21,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4993 transitions. [2021-06-05 03:40:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:21,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:21,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:21,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-06-05 03:40:21,266 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:21,267 INFO L82 PathProgramCache]: Analyzing trace with hash 18157341, now seen corresponding path program 455 times [2021-06-05 03:40:21,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:21,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955347018] [2021-06-05 03:40:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:21,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:21,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955347018] [2021-06-05 03:40:21,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955347018] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:21,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:21,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:21,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003622202] [2021-06-05 03:40:21,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:21,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:21,358 INFO L87 Difference]: Start difference. First operand 1282 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:21,421 INFO L93 Difference]: Finished difference Result 2045 states and 7595 transitions. [2021-06-05 03:40:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:21,424 INFO L225 Difference]: With dead ends: 2045 [2021-06-05 03:40:21,425 INFO L226 Difference]: Without dead ends: 1862 [2021-06-05 03:40:21,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-06-05 03:40:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1306. [2021-06-05 03:40:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.8842911877394637) internal successors, (5069), 1305 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5069 transitions. [2021-06-05 03:40:21,457 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5069 transitions. Word has length 25 [2021-06-05 03:40:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:21,457 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5069 transitions. [2021-06-05 03:40:21,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5069 transitions. [2021-06-05 03:40:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:21,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:21,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:21,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-06-05 03:40:21,459 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:21,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:21,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1099219967, now seen corresponding path program 456 times [2021-06-05 03:40:21,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:21,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623893727] [2021-06-05 03:40:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:21,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:21,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623893727] [2021-06-05 03:40:21,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623893727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:21,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:21,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:21,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536235916] [2021-06-05 03:40:21,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:21,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:21,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:21,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:21,550 INFO L87 Difference]: Start difference. First operand 1306 states and 5069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:21,605 INFO L93 Difference]: Finished difference Result 1861 states and 6982 transitions. [2021-06-05 03:40:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:21,609 INFO L225 Difference]: With dead ends: 1861 [2021-06-05 03:40:21,609 INFO L226 Difference]: Without dead ends: 1646 [2021-06-05 03:40:21,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-06-05 03:40:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1266. [2021-06-05 03:40:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 3.9138339920948617) internal successors, (4951), 1265 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 4951 transitions. [2021-06-05 03:40:21,637 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 4951 transitions. Word has length 25 [2021-06-05 03:40:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:21,637 INFO L482 AbstractCegarLoop]: Abstraction has 1266 states and 4951 transitions. [2021-06-05 03:40:21,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 4951 transitions. [2021-06-05 03:40:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:21,639 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:21,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:21,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-06-05 03:40:21,640 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1804947553, now seen corresponding path program 457 times [2021-06-05 03:40:21,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:21,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374064888] [2021-06-05 03:40:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:21,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:21,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374064888] [2021-06-05 03:40:21,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374064888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:21,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:21,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:21,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210330329] [2021-06-05 03:40:21,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:21,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:21,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:21,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:21,717 INFO L87 Difference]: Start difference. First operand 1266 states and 4951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:21,777 INFO L93 Difference]: Finished difference Result 2910 states and 10765 transitions. [2021-06-05 03:40:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:21,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:21,782 INFO L225 Difference]: With dead ends: 2910 [2021-06-05 03:40:21,783 INFO L226 Difference]: Without dead ends: 2723 [2021-06-05 03:40:21,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-06-05 03:40:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1316. [2021-06-05 03:40:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 3.9133079847908747) internal successors, (5146), 1315 states have internal predecessors, (5146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5146 transitions. [2021-06-05 03:40:21,819 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5146 transitions. Word has length 25 [2021-06-05 03:40:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:21,819 INFO L482 AbstractCegarLoop]: Abstraction has 1316 states and 5146 transitions. [2021-06-05 03:40:21,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5146 transitions. [2021-06-05 03:40:21,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:21,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:21,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:21,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-06-05 03:40:21,821 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:21,821 INFO L82 PathProgramCache]: Analyzing trace with hash -238389441, now seen corresponding path program 458 times [2021-06-05 03:40:21,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:21,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115195530] [2021-06-05 03:40:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:21,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:21,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115195530] [2021-06-05 03:40:21,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115195530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:21,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:21,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:21,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336666515] [2021-06-05 03:40:21,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:21,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:21,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:21,896 INFO L87 Difference]: Start difference. First operand 1316 states and 5146 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:21,957 INFO L93 Difference]: Finished difference Result 2906 states and 10725 transitions. [2021-06-05 03:40:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:21,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:21,962 INFO L225 Difference]: With dead ends: 2906 [2021-06-05 03:40:21,962 INFO L226 Difference]: Without dead ends: 2695 [2021-06-05 03:40:21,962 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-06-05 03:40:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1288. [2021-06-05 03:40:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.9207459207459205) internal successors, (5046), 1287 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 5046 transitions. [2021-06-05 03:40:21,998 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 5046 transitions. Word has length 25 [2021-06-05 03:40:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:21,998 INFO L482 AbstractCegarLoop]: Abstraction has 1288 states and 5046 transitions. [2021-06-05 03:40:21,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 5046 transitions. [2021-06-05 03:40:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:21,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:21,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:21,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-06-05 03:40:22,000 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:22,000 INFO L82 PathProgramCache]: Analyzing trace with hash 958150591, now seen corresponding path program 459 times [2021-06-05 03:40:22,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:22,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105213662] [2021-06-05 03:40:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:22,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:22,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105213662] [2021-06-05 03:40:22,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105213662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:22,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:22,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:22,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491851895] [2021-06-05 03:40:22,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:22,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:22,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:22,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:22,076 INFO L87 Difference]: Start difference. First operand 1288 states and 5046 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:22,136 INFO L93 Difference]: Finished difference Result 2898 states and 10709 transitions. [2021-06-05 03:40:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:22,142 INFO L225 Difference]: With dead ends: 2898 [2021-06-05 03:40:22,142 INFO L226 Difference]: Without dead ends: 2711 [2021-06-05 03:40:22,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2021-06-05 03:40:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 1312. [2021-06-05 03:40:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 3.906941266209001) internal successors, (5122), 1311 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5122 transitions. [2021-06-05 03:40:22,178 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5122 transitions. Word has length 25 [2021-06-05 03:40:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:22,178 INFO L482 AbstractCegarLoop]: Abstraction has 1312 states and 5122 transitions. [2021-06-05 03:40:22,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5122 transitions. [2021-06-05 03:40:22,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:22,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:22,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:22,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-06-05 03:40:22,180 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:22,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2144350273, now seen corresponding path program 460 times [2021-06-05 03:40:22,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:22,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739477035] [2021-06-05 03:40:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:22,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:22,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739477035] [2021-06-05 03:40:22,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739477035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:22,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:22,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:22,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491443285] [2021-06-05 03:40:22,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:22,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:22,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:22,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:22,255 INFO L87 Difference]: Start difference. First operand 1312 states and 5122 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:22,316 INFO L93 Difference]: Finished difference Result 2886 states and 10645 transitions. [2021-06-05 03:40:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:22,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:22,322 INFO L225 Difference]: With dead ends: 2886 [2021-06-05 03:40:22,322 INFO L226 Difference]: Without dead ends: 2687 [2021-06-05 03:40:22,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-06-05 03:40:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1288. [2021-06-05 03:40:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.9114219114219115) internal successors, (5034), 1287 states have internal predecessors, (5034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 5034 transitions. [2021-06-05 03:40:22,357 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 5034 transitions. Word has length 25 [2021-06-05 03:40:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:22,358 INFO L482 AbstractCegarLoop]: Abstraction has 1288 states and 5034 transitions. [2021-06-05 03:40:22,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 5034 transitions. [2021-06-05 03:40:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:22,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:22,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:22,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-06-05 03:40:22,360 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:22,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1940498205, now seen corresponding path program 461 times [2021-06-05 03:40:22,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:22,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502735753] [2021-06-05 03:40:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:22,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:22,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502735753] [2021-06-05 03:40:22,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502735753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:22,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:22,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:22,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385962215] [2021-06-05 03:40:22,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:22,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:22,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:22,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:22,439 INFO L87 Difference]: Start difference. First operand 1288 states and 5034 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:22,506 INFO L93 Difference]: Finished difference Result 2890 states and 10673 transitions. [2021-06-05 03:40:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:22,512 INFO L225 Difference]: With dead ends: 2890 [2021-06-05 03:40:22,512 INFO L226 Difference]: Without dead ends: 2707 [2021-06-05 03:40:22,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-06-05 03:40:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1312. [2021-06-05 03:40:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 3.8977879481311977) internal successors, (5110), 1311 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5110 transitions. [2021-06-05 03:40:22,546 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5110 transitions. Word has length 25 [2021-06-05 03:40:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:22,547 INFO L482 AbstractCegarLoop]: Abstraction has 1312 states and 5110 transitions. [2021-06-05 03:40:22,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5110 transitions. [2021-06-05 03:40:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:22,548 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:22,548 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:22,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-06-05 03:40:22,548 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:22,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1273406465, now seen corresponding path program 462 times [2021-06-05 03:40:22,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:22,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415009657] [2021-06-05 03:40:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:22,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:22,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415009657] [2021-06-05 03:40:22,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415009657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:22,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:22,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:22,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006842094] [2021-06-05 03:40:22,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:22,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:22,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:22,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:22,626 INFO L87 Difference]: Start difference. First operand 1312 states and 5110 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:22,687 INFO L93 Difference]: Finished difference Result 2882 states and 10621 transitions. [2021-06-05 03:40:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:22,693 INFO L225 Difference]: With dead ends: 2882 [2021-06-05 03:40:22,693 INFO L226 Difference]: Without dead ends: 2671 [2021-06-05 03:40:22,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2021-06-05 03:40:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 1276. [2021-06-05 03:40:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9184313725490196) internal successors, (4996), 1275 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4996 transitions. [2021-06-05 03:40:22,728 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4996 transitions. Word has length 25 [2021-06-05 03:40:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:22,728 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4996 transitions. [2021-06-05 03:40:22,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4996 transitions. [2021-06-05 03:40:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:22,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:22,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:22,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-06-05 03:40:22,730 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:22,730 INFO L82 PathProgramCache]: Analyzing trace with hash -158407361, now seen corresponding path program 463 times [2021-06-05 03:40:22,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:22,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465902883] [2021-06-05 03:40:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:22,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:22,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465902883] [2021-06-05 03:40:22,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465902883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:22,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:22,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:22,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200378210] [2021-06-05 03:40:22,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:22,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:22,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:22,806 INFO L87 Difference]: Start difference. First operand 1276 states and 4996 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:22,871 INFO L93 Difference]: Finished difference Result 2802 states and 10327 transitions. [2021-06-05 03:40:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:22,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:22,876 INFO L225 Difference]: With dead ends: 2802 [2021-06-05 03:40:22,876 INFO L226 Difference]: Without dead ends: 2615 [2021-06-05 03:40:22,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-06-05 03:40:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1326. [2021-06-05 03:40:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1325 states have (on average 3.913207547169811) internal successors, (5185), 1325 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 5185 transitions. [2021-06-05 03:40:22,911 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 5185 transitions. Word has length 25 [2021-06-05 03:40:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:22,912 INFO L482 AbstractCegarLoop]: Abstraction has 1326 states and 5185 transitions. [2021-06-05 03:40:22,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 5185 transitions. [2021-06-05 03:40:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:22,913 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:22,913 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:22,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-06-05 03:40:22,913 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:22,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2093222941, now seen corresponding path program 464 times [2021-06-05 03:40:22,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:22,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133293488] [2021-06-05 03:40:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:22,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:22,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133293488] [2021-06-05 03:40:22,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133293488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:22,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:22,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:22,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631992096] [2021-06-05 03:40:22,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:22,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:22,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:22,991 INFO L87 Difference]: Start difference. First operand 1326 states and 5185 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:23,052 INFO L93 Difference]: Finished difference Result 2798 states and 10287 transitions. [2021-06-05 03:40:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:23,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:23,057 INFO L225 Difference]: With dead ends: 2798 [2021-06-05 03:40:23,057 INFO L226 Difference]: Without dead ends: 2587 [2021-06-05 03:40:23,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-06-05 03:40:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1298. [2021-06-05 03:40:23,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.9190439475713186) internal successors, (5083), 1297 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5083 transitions. [2021-06-05 03:40:23,092 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5083 transitions. Word has length 25 [2021-06-05 03:40:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:23,092 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5083 transitions. [2021-06-05 03:40:23,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5083 transitions. [2021-06-05 03:40:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:23,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:23,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:23,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-06-05 03:40:23,094 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:23,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2065294017, now seen corresponding path program 465 times [2021-06-05 03:40:23,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:23,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339089591] [2021-06-05 03:40:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:23,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:23,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339089591] [2021-06-05 03:40:23,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339089591] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:23,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:23,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:23,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487026219] [2021-06-05 03:40:23,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:23,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:23,171 INFO L87 Difference]: Start difference. First operand 1298 states and 5083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:23,232 INFO L93 Difference]: Finished difference Result 2859 states and 10515 transitions. [2021-06-05 03:40:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:23,237 INFO L225 Difference]: With dead ends: 2859 [2021-06-05 03:40:23,237 INFO L226 Difference]: Without dead ends: 2672 [2021-06-05 03:40:23,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-06-05 03:40:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1344. [2021-06-05 03:40:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.9017125837676843) internal successors, (5240), 1343 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 5240 transitions. [2021-06-05 03:40:23,273 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 5240 transitions. Word has length 25 [2021-06-05 03:40:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:23,273 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 5240 transitions. [2021-06-05 03:40:23,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 5240 transitions. [2021-06-05 03:40:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:23,275 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:23,275 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:23,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-06-05 03:40:23,275 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1984404161, now seen corresponding path program 466 times [2021-06-05 03:40:23,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:23,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696212952] [2021-06-05 03:40:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:23,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:23,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696212952] [2021-06-05 03:40:23,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696212952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:23,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:23,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:23,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926879184] [2021-06-05 03:40:23,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:23,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:23,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:23,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:23,352 INFO L87 Difference]: Start difference. First operand 1344 states and 5240 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:23,400 INFO L93 Difference]: Finished difference Result 2894 states and 10604 transitions. [2021-06-05 03:40:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:23,406 INFO L225 Difference]: With dead ends: 2894 [2021-06-05 03:40:23,406 INFO L226 Difference]: Without dead ends: 2626 [2021-06-05 03:40:23,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-06-05 03:40:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1298. [2021-06-05 03:40:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.902081727062452) internal successors, (5061), 1297 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5061 transitions. [2021-06-05 03:40:23,440 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5061 transitions. Word has length 25 [2021-06-05 03:40:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:23,440 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5061 transitions. [2021-06-05 03:40:23,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5061 transitions. [2021-06-05 03:40:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:23,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:23,442 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:23,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-06-05 03:40:23,442 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:23,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1082946403, now seen corresponding path program 467 times [2021-06-05 03:40:23,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:23,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734717395] [2021-06-05 03:40:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:23,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:23,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734717395] [2021-06-05 03:40:23,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734717395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:23,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:23,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:23,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450368714] [2021-06-05 03:40:23,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:23,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:23,531 INFO L87 Difference]: Start difference. First operand 1298 states and 5061 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:23,590 INFO L93 Difference]: Finished difference Result 2849 states and 10462 transitions. [2021-06-05 03:40:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:23,595 INFO L225 Difference]: With dead ends: 2849 [2021-06-05 03:40:23,595 INFO L226 Difference]: Without dead ends: 2666 [2021-06-05 03:40:23,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2021-06-05 03:40:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1342. [2021-06-05 03:40:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.8873974645786724) internal successors, (5213), 1341 states have internal predecessors, (5213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5213 transitions. [2021-06-05 03:40:23,631 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5213 transitions. Word has length 25 [2021-06-05 03:40:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:23,631 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 5213 transitions. [2021-06-05 03:40:23,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5213 transitions. [2021-06-05 03:40:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:23,633 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:23,633 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:23,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-06-05 03:40:23,633 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2142501887, now seen corresponding path program 468 times [2021-06-05 03:40:23,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:23,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527310124] [2021-06-05 03:40:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:23,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:23,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527310124] [2021-06-05 03:40:23,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527310124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:23,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:23,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:23,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045649265] [2021-06-05 03:40:23,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:23,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:23,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:23,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:23,721 INFO L87 Difference]: Start difference. First operand 1342 states and 5213 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:23,770 INFO L93 Difference]: Finished difference Result 2888 states and 10565 transitions. [2021-06-05 03:40:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:23,775 INFO L225 Difference]: With dead ends: 2888 [2021-06-05 03:40:23,775 INFO L226 Difference]: Without dead ends: 2600 [2021-06-05 03:40:23,776 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-06-05 03:40:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1276. [2021-06-05 03:40:23,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9105882352941177) internal successors, (4986), 1275 states have internal predecessors, (4986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4986 transitions. [2021-06-05 03:40:23,810 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4986 transitions. Word has length 25 [2021-06-05 03:40:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:23,810 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4986 transitions. [2021-06-05 03:40:23,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4986 transitions. [2021-06-05 03:40:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:23,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:23,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:23,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-06-05 03:40:23,812 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:23,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1015155427, now seen corresponding path program 469 times [2021-06-05 03:40:23,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:23,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373203597] [2021-06-05 03:40:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:23,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:23,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373203597] [2021-06-05 03:40:23,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373203597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:23,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:23,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:23,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580565148] [2021-06-05 03:40:23,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:23,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:23,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:23,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:23,891 INFO L87 Difference]: Start difference. First operand 1276 states and 4986 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:23,958 INFO L93 Difference]: Finished difference Result 2756 states and 10128 transitions. [2021-06-05 03:40:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:23,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:23,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:23,963 INFO L225 Difference]: With dead ends: 2756 [2021-06-05 03:40:23,963 INFO L226 Difference]: Without dead ends: 2569 [2021-06-05 03:40:23,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-06-05 03:40:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1320. [2021-06-05 03:40:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 3.907505686125853) internal successors, (5154), 1319 states have internal predecessors, (5154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 5154 transitions. [2021-06-05 03:40:23,998 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 5154 transitions. Word has length 25 [2021-06-05 03:40:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:23,998 INFO L482 AbstractCegarLoop]: Abstraction has 1320 states and 5154 transitions. [2021-06-05 03:40:23,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 5154 transitions. [2021-06-05 03:40:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:24,000 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:24,000 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:24,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-06-05 03:40:24,000 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:24,000 INFO L82 PathProgramCache]: Analyzing trace with hash 177311005, now seen corresponding path program 470 times [2021-06-05 03:40:24,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:24,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835802436] [2021-06-05 03:40:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:24,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:24,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835802436] [2021-06-05 03:40:24,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835802436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:24,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:24,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:24,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066353631] [2021-06-05 03:40:24,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:24,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:24,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:24,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:24,076 INFO L87 Difference]: Start difference. First operand 1320 states and 5154 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:24,137 INFO L93 Difference]: Finished difference Result 2744 states and 10064 transitions. [2021-06-05 03:40:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:24,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:24,142 INFO L225 Difference]: With dead ends: 2744 [2021-06-05 03:40:24,143 INFO L226 Difference]: Without dead ends: 2545 [2021-06-05 03:40:24,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-06-05 03:40:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1296. [2021-06-05 03:40:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.911969111969112) internal successors, (5066), 1295 states have internal predecessors, (5066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5066 transitions. [2021-06-05 03:40:24,177 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5066 transitions. Word has length 25 [2021-06-05 03:40:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:24,177 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5066 transitions. [2021-06-05 03:40:24,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5066 transitions. [2021-06-05 03:40:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:24,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:24,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:24,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-06-05 03:40:24,179 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1632678785, now seen corresponding path program 471 times [2021-06-05 03:40:24,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:24,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718127451] [2021-06-05 03:40:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:24,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:24,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718127451] [2021-06-05 03:40:24,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718127451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:24,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:24,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:24,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747090654] [2021-06-05 03:40:24,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:24,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:24,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:24,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:24,254 INFO L87 Difference]: Start difference. First operand 1296 states and 5066 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:24,315 INFO L93 Difference]: Finished difference Result 2779 states and 10175 transitions. [2021-06-05 03:40:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:24,320 INFO L225 Difference]: With dead ends: 2779 [2021-06-05 03:40:24,320 INFO L226 Difference]: Without dead ends: 2592 [2021-06-05 03:40:24,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:24,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-06-05 03:40:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1342. [2021-06-05 03:40:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.894854586129754) internal successors, (5223), 1341 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5223 transitions. [2021-06-05 03:40:24,355 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5223 transitions. Word has length 25 [2021-06-05 03:40:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:24,356 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 5223 transitions. [2021-06-05 03:40:24,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5223 transitions. [2021-06-05 03:40:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:24,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:24,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:24,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-06-05 03:40:24,357 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:24,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:24,358 INFO L82 PathProgramCache]: Analyzing trace with hash 287501597, now seen corresponding path program 472 times [2021-06-05 03:40:24,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:24,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103772094] [2021-06-05 03:40:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:24,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:24,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103772094] [2021-06-05 03:40:24,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103772094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:24,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:24,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:24,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871471443] [2021-06-05 03:40:24,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:24,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:24,434 INFO L87 Difference]: Start difference. First operand 1342 states and 5223 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:24,483 INFO L93 Difference]: Finished difference Result 2814 states and 10264 transitions. [2021-06-05 03:40:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:24,488 INFO L225 Difference]: With dead ends: 2814 [2021-06-05 03:40:24,488 INFO L226 Difference]: Without dead ends: 2546 [2021-06-05 03:40:24,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-06-05 03:40:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1296. [2021-06-05 03:40:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.8965250965250964) internal successors, (5046), 1295 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5046 transitions. [2021-06-05 03:40:24,522 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5046 transitions. Word has length 25 [2021-06-05 03:40:24,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:24,522 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5046 transitions. [2021-06-05 03:40:24,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5046 transitions. [2021-06-05 03:40:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:24,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:24,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:24,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-06-05 03:40:24,524 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 603051293, now seen corresponding path program 473 times [2021-06-05 03:40:24,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:24,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869189110] [2021-06-05 03:40:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:24,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:24,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869189110] [2021-06-05 03:40:24,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869189110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:24,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:24,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:24,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216472101] [2021-06-05 03:40:24,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:24,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:24,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:24,613 INFO L87 Difference]: Start difference. First operand 1296 states and 5046 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:24,674 INFO L93 Difference]: Finished difference Result 2749 states and 10052 transitions. [2021-06-05 03:40:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:24,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:24,678 INFO L225 Difference]: With dead ends: 2749 [2021-06-05 03:40:24,679 INFO L226 Difference]: Without dead ends: 2574 [2021-06-05 03:40:24,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-06-05 03:40:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1336. [2021-06-05 03:40:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.884644194756554) internal successors, (5186), 1335 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5186 transitions. [2021-06-05 03:40:24,714 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5186 transitions. Word has length 25 [2021-06-05 03:40:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:24,714 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5186 transitions. [2021-06-05 03:40:24,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5186 transitions. [2021-06-05 03:40:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:24,716 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:24,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:24,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-06-05 03:40:24,716 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash 821402879, now seen corresponding path program 474 times [2021-06-05 03:40:24,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:24,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017473948] [2021-06-05 03:40:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:24,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:24,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017473948] [2021-06-05 03:40:24,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017473948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:24,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:24,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:24,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390225409] [2021-06-05 03:40:24,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:24,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:24,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:24,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:24,804 INFO L87 Difference]: Start difference. First operand 1336 states and 5186 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:24,861 INFO L93 Difference]: Finished difference Result 2701 states and 9852 transitions. [2021-06-05 03:40:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:24,866 INFO L225 Difference]: With dead ends: 2701 [2021-06-05 03:40:24,866 INFO L226 Difference]: Without dead ends: 2419 [2021-06-05 03:40:24,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2021-06-05 03:40:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1276. [2021-06-05 03:40:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9027450980392158) internal successors, (4976), 1275 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4976 transitions. [2021-06-05 03:40:24,898 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4976 transitions. Word has length 25 [2021-06-05 03:40:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:24,898 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4976 transitions. [2021-06-05 03:40:24,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4976 transitions. [2021-06-05 03:40:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:24,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:24,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:24,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-06-05 03:40:24,900 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:24,900 INFO L82 PathProgramCache]: Analyzing trace with hash -42758917, now seen corresponding path program 475 times [2021-06-05 03:40:24,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:24,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393747941] [2021-06-05 03:40:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:24,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:24,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393747941] [2021-06-05 03:40:24,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393747941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:24,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:24,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:24,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265864051] [2021-06-05 03:40:24,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:24,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:24,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:24,984 INFO L87 Difference]: Start difference. First operand 1276 states and 4976 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:25,043 INFO L93 Difference]: Finished difference Result 2678 states and 9803 transitions. [2021-06-05 03:40:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:25,048 INFO L225 Difference]: With dead ends: 2678 [2021-06-05 03:40:25,048 INFO L226 Difference]: Without dead ends: 2495 [2021-06-05 03:40:25,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:25,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-06-05 03:40:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1320. [2021-06-05 03:40:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 3.899924184988628) internal successors, (5144), 1319 states have internal predecessors, (5144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 5144 transitions. [2021-06-05 03:40:25,082 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 5144 transitions. Word has length 25 [2021-06-05 03:40:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:25,082 INFO L482 AbstractCegarLoop]: Abstraction has 1320 states and 5144 transitions. [2021-06-05 03:40:25,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 5144 transitions. [2021-06-05 03:40:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:25,084 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:25,084 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:25,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-06-05 03:40:25,084 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:25,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:25,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1038303709, now seen corresponding path program 476 times [2021-06-05 03:40:25,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:25,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046073959] [2021-06-05 03:40:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:25,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:25,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046073959] [2021-06-05 03:40:25,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046073959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:25,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:25,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:25,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162922238] [2021-06-05 03:40:25,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:25,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:25,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:25,171 INFO L87 Difference]: Start difference. First operand 1320 states and 5144 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:25,240 INFO L93 Difference]: Finished difference Result 2670 states and 9751 transitions. [2021-06-05 03:40:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:25,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:25,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:25,245 INFO L225 Difference]: With dead ends: 2670 [2021-06-05 03:40:25,245 INFO L226 Difference]: Without dead ends: 2471 [2021-06-05 03:40:25,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-06-05 03:40:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1296. [2021-06-05 03:40:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.904247104247104) internal successors, (5056), 1295 states have internal predecessors, (5056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5056 transitions. [2021-06-05 03:40:25,279 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5056 transitions. Word has length 25 [2021-06-05 03:40:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:25,279 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5056 transitions. [2021-06-05 03:40:25,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5056 transitions. [2021-06-05 03:40:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:25,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:25,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:25,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-06-05 03:40:25,281 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash -660282275, now seen corresponding path program 477 times [2021-06-05 03:40:25,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:25,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121287686] [2021-06-05 03:40:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:25,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:25,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121287686] [2021-06-05 03:40:25,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121287686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:25,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:25,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:25,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283157310] [2021-06-05 03:40:25,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:25,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:25,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:25,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:25,376 INFO L87 Difference]: Start difference. First operand 1296 states and 5056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:25,433 INFO L93 Difference]: Finished difference Result 2606 states and 9515 transitions. [2021-06-05 03:40:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:25,438 INFO L225 Difference]: With dead ends: 2606 [2021-06-05 03:40:25,438 INFO L226 Difference]: Without dead ends: 2423 [2021-06-05 03:40:25,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-06-05 03:40:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1340. [2021-06-05 03:40:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 3.8894697535474236) internal successors, (5208), 1339 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 5208 transitions. [2021-06-05 03:40:25,471 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 5208 transitions. Word has length 25 [2021-06-05 03:40:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:25,471 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 5208 transitions. [2021-06-05 03:40:25,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 5208 transitions. [2021-06-05 03:40:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:25,473 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:25,473 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:25,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-06-05 03:40:25,473 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:25,473 INFO L82 PathProgramCache]: Analyzing trace with hash 109489245, now seen corresponding path program 478 times [2021-06-05 03:40:25,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:25,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961457254] [2021-06-05 03:40:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:25,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:25,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961457254] [2021-06-05 03:40:25,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961457254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:25,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:25,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:25,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359335330] [2021-06-05 03:40:25,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:25,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:25,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:25,573 INFO L87 Difference]: Start difference. First operand 1340 states and 5208 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:25,623 INFO L93 Difference]: Finished difference Result 2645 states and 9618 transitions. [2021-06-05 03:40:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:25,627 INFO L225 Difference]: With dead ends: 2645 [2021-06-05 03:40:25,627 INFO L226 Difference]: Without dead ends: 2379 [2021-06-05 03:40:25,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2021-06-05 03:40:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1296. [2021-06-05 03:40:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.8888030888030887) internal successors, (5036), 1295 states have internal predecessors, (5036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5036 transitions. [2021-06-05 03:40:25,659 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5036 transitions. Word has length 25 [2021-06-05 03:40:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:25,659 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5036 transitions. [2021-06-05 03:40:25,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5036 transitions. [2021-06-05 03:40:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:25,661 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:25,661 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:25,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-06-05 03:40:25,661 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:25,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:25,661 INFO L82 PathProgramCache]: Analyzing trace with hash -272277313, now seen corresponding path program 479 times [2021-06-05 03:40:25,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:25,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246407215] [2021-06-05 03:40:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:25,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:25,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246407215] [2021-06-05 03:40:25,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246407215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:25,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:25,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:25,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152356393] [2021-06-05 03:40:25,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:25,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:25,756 INFO L87 Difference]: Start difference. First operand 1296 states and 5036 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:25,818 INFO L93 Difference]: Finished difference Result 2546 states and 9259 transitions. [2021-06-05 03:40:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:25,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:25,823 INFO L225 Difference]: With dead ends: 2546 [2021-06-05 03:40:25,823 INFO L226 Difference]: Without dead ends: 2371 [2021-06-05 03:40:25,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2021-06-05 03:40:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1336. [2021-06-05 03:40:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.8771535580524343) internal successors, (5176), 1335 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5176 transitions. [2021-06-05 03:40:25,855 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5176 transitions. Word has length 25 [2021-06-05 03:40:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:25,855 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5176 transitions. [2021-06-05 03:40:25,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5176 transitions. [2021-06-05 03:40:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:25,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:25,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:25,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-06-05 03:40:25,857 INFO L430 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2093312739, now seen corresponding path program 480 times [2021-06-05 03:40:25,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:25,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525962982] [2021-06-05 03:40:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:25,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:25,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525962982] [2021-06-05 03:40:25,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525962982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:25,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:25,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:25,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407116626] [2021-06-05 03:40:25,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:25,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:25,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:25,952 INFO L87 Difference]: Start difference. First operand 1336 states and 5176 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:26,002 INFO L93 Difference]: Finished difference Result 2498 states and 9059 transitions. [2021-06-05 03:40:26,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:26,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:26,007 INFO L225 Difference]: With dead ends: 2498 [2021-06-05 03:40:26,007 INFO L226 Difference]: Without dead ends: 2202 [2021-06-05 03:40:26,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-06-05 03:40:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1262. [2021-06-05 03:40:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.9183187946074542) internal successors, (4941), 1261 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4941 transitions. [2021-06-05 03:40:26,038 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4941 transitions. Word has length 25 [2021-06-05 03:40:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:26,038 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4941 transitions. [2021-06-05 03:40:26,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4941 transitions. [2021-06-05 03:40:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:26,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:26,040 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:26,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-06-05 03:40:26,040 INFO L430 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1302479273, now seen corresponding path program 481 times [2021-06-05 03:40:26,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:26,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494151463] [2021-06-05 03:40:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:26,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:26,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494151463] [2021-06-05 03:40:26,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494151463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:26,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:26,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:26,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759225745] [2021-06-05 03:40:26,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:26,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:26,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:26,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:26,134 INFO L87 Difference]: Start difference. First operand 1262 states and 4941 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:26,194 INFO L93 Difference]: Finished difference Result 2545 states and 9271 transitions. [2021-06-05 03:40:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:26,199 INFO L225 Difference]: With dead ends: 2545 [2021-06-05 03:40:26,199 INFO L226 Difference]: Without dead ends: 2386 [2021-06-05 03:40:26,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-06-05 03:40:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1286. [2021-06-05 03:40:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9105058365758754) internal successors, (5025), 1285 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5025 transitions. [2021-06-05 03:40:26,234 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5025 transitions. Word has length 25 [2021-06-05 03:40:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:26,234 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5025 transitions. [2021-06-05 03:40:26,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5025 transitions. [2021-06-05 03:40:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:26,235 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:26,235 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:26,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-06-05 03:40:26,236 INFO L430 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:26,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:26,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1402553273, now seen corresponding path program 482 times [2021-06-05 03:40:26,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:26,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231058050] [2021-06-05 03:40:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:26,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:26,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231058050] [2021-06-05 03:40:26,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231058050] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:26,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:26,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:26,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344901387] [2021-06-05 03:40:26,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:26,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:26,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:26,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:26,327 INFO L87 Difference]: Start difference. First operand 1286 states and 5025 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:26,402 INFO L93 Difference]: Finished difference Result 2575 states and 9364 transitions. [2021-06-05 03:40:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:26,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:26,407 INFO L225 Difference]: With dead ends: 2575 [2021-06-05 03:40:26,407 INFO L226 Difference]: Without dead ends: 2370 [2021-06-05 03:40:26,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2021-06-05 03:40:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1270. [2021-06-05 03:40:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9156816390858946) internal successors, (4969), 1269 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4969 transitions. [2021-06-05 03:40:26,440 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4969 transitions. Word has length 25 [2021-06-05 03:40:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:26,440 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4969 transitions. [2021-06-05 03:40:26,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4969 transitions. [2021-06-05 03:40:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:26,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:26,441 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:26,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-06-05 03:40:26,442 INFO L430 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:26,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:26,442 INFO L82 PathProgramCache]: Analyzing trace with hash -221416647, now seen corresponding path program 483 times [2021-06-05 03:40:26,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:26,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341089024] [2021-06-05 03:40:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:26,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:26,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341089024] [2021-06-05 03:40:26,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341089024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:26,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:26,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:26,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312769224] [2021-06-05 03:40:26,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:26,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:26,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:26,536 INFO L87 Difference]: Start difference. First operand 1270 states and 4969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:26,589 INFO L93 Difference]: Finished difference Result 2543 states and 9258 transitions. [2021-06-05 03:40:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:26,593 INFO L225 Difference]: With dead ends: 2543 [2021-06-05 03:40:26,594 INFO L226 Difference]: Without dead ends: 2384 [2021-06-05 03:40:26,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2021-06-05 03:40:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1286. [2021-06-05 03:40:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9042801556420232) internal successors, (5017), 1285 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5017 transitions. [2021-06-05 03:40:26,626 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5017 transitions. Word has length 25 [2021-06-05 03:40:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:26,626 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5017 transitions. [2021-06-05 03:40:26,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5017 transitions. [2021-06-05 03:40:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:26,628 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:26,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:26,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-06-05 03:40:26,628 INFO L430 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash 786881337, now seen corresponding path program 484 times [2021-06-05 03:40:26,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:26,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305623892] [2021-06-05 03:40:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:26,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:26,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305623892] [2021-06-05 03:40:26,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305623892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:26,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:26,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:26,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543228640] [2021-06-05 03:40:26,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:26,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:26,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:26,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:26,723 INFO L87 Difference]: Start difference. First operand 1286 states and 5017 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:26,796 INFO L93 Difference]: Finished difference Result 2571 states and 9346 transitions. [2021-06-05 03:40:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:26,800 INFO L225 Difference]: With dead ends: 2571 [2021-06-05 03:40:26,800 INFO L226 Difference]: Without dead ends: 2368 [2021-06-05 03:40:26,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2021-06-05 03:40:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1270. [2021-06-05 03:40:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.909377462568952) internal successors, (4961), 1269 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2021-06-05 03:40:26,833 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2021-06-05 03:40:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:26,833 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2021-06-05 03:40:26,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2021-06-05 03:40:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:26,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:26,834 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:26,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-06-05 03:40:26,834 INFO L430 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1195745307, now seen corresponding path program 485 times [2021-06-05 03:40:26,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:26,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034026246] [2021-06-05 03:40:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:26,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:26,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034026246] [2021-06-05 03:40:26,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034026246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:26,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:26,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:26,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018503173] [2021-06-05 03:40:26,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:26,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:26,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:26,917 INFO L87 Difference]: Start difference. First operand 1270 states and 4961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:26,988 INFO L93 Difference]: Finished difference Result 2617 states and 9527 transitions. [2021-06-05 03:40:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:26,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:26,992 INFO L225 Difference]: With dead ends: 2617 [2021-06-05 03:40:26,992 INFO L226 Difference]: Without dead ends: 2428 [2021-06-05 03:40:26,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-06-05 03:40:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1300. [2021-06-05 03:40:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.890685142417244) internal successors, (5054), 1299 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 5054 transitions. [2021-06-05 03:40:27,025 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 5054 transitions. Word has length 25 [2021-06-05 03:40:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:27,025 INFO L482 AbstractCegarLoop]: Abstraction has 1300 states and 5054 transitions. [2021-06-05 03:40:27,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 5054 transitions. [2021-06-05 03:40:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:27,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:27,027 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:27,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-06-05 03:40:27,027 INFO L430 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash -847591687, now seen corresponding path program 486 times [2021-06-05 03:40:27,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:27,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784377086] [2021-06-05 03:40:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:27,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:27,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784377086] [2021-06-05 03:40:27,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784377086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:27,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:27,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:27,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838511478] [2021-06-05 03:40:27,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:27,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:27,112 INFO L87 Difference]: Start difference. First operand 1300 states and 5054 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:27,177 INFO L93 Difference]: Finished difference Result 2615 states and 9492 transitions. [2021-06-05 03:40:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:27,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:27,181 INFO L225 Difference]: With dead ends: 2615 [2021-06-05 03:40:27,181 INFO L226 Difference]: Without dead ends: 2390 [2021-06-05 03:40:27,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-06-05 03:40:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1262. [2021-06-05 03:40:27,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.915146708961142) internal successors, (4937), 1261 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4937 transitions. [2021-06-05 03:40:27,213 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4937 transitions. Word has length 25 [2021-06-05 03:40:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:27,214 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4937 transitions. [2021-06-05 03:40:27,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4937 transitions. [2021-06-05 03:40:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:27,215 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:27,215 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:27,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-06-05 03:40:27,215 INFO L430 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:27,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:27,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1783381319, now seen corresponding path program 487 times [2021-06-05 03:40:27,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:27,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931775599] [2021-06-05 03:40:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:27,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:27,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931775599] [2021-06-05 03:40:27,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931775599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:27,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:27,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:27,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040604405] [2021-06-05 03:40:27,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:27,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:27,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:27,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:27,299 INFO L87 Difference]: Start difference. First operand 1262 states and 4937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:27,350 INFO L93 Difference]: Finished difference Result 2539 states and 9248 transitions. [2021-06-05 03:40:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:27,354 INFO L225 Difference]: With dead ends: 2539 [2021-06-05 03:40:27,354 INFO L226 Difference]: Without dead ends: 2380 [2021-06-05 03:40:27,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-06-05 03:40:27,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1286. [2021-06-05 03:40:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9073929961089493) internal successors, (5021), 1285 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5021 transitions. [2021-06-05 03:40:27,387 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5021 transitions. Word has length 25 [2021-06-05 03:40:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:27,387 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5021 transitions. [2021-06-05 03:40:27,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5021 transitions. [2021-06-05 03:40:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:27,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:27,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:27,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-06-05 03:40:27,389 INFO L430 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:27,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:27,389 INFO L82 PathProgramCache]: Analyzing trace with hash 921651227, now seen corresponding path program 488 times [2021-06-05 03:40:27,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:27,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423739153] [2021-06-05 03:40:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:27,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:27,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423739153] [2021-06-05 03:40:27,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423739153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:27,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:27,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:27,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141825943] [2021-06-05 03:40:27,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:27,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:27,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:27,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:27,472 INFO L87 Difference]: Start difference. First operand 1286 states and 5021 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:27,540 INFO L93 Difference]: Finished difference Result 2569 states and 9341 transitions. [2021-06-05 03:40:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:27,544 INFO L225 Difference]: With dead ends: 2569 [2021-06-05 03:40:27,544 INFO L226 Difference]: Without dead ends: 2364 [2021-06-05 03:40:27,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2021-06-05 03:40:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 1270. [2021-06-05 03:40:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9125295508274234) internal successors, (4965), 1269 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4965 transitions. [2021-06-05 03:40:27,578 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4965 transitions. Word has length 25 [2021-06-05 03:40:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:27,578 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4965 transitions. [2021-06-05 03:40:27,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4965 transitions. [2021-06-05 03:40:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:27,580 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:27,580 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:27,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-06-05 03:40:27,580 INFO L430 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 823339705, now seen corresponding path program 489 times [2021-06-05 03:40:27,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:27,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697859545] [2021-06-05 03:40:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:27,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:27,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697859545] [2021-06-05 03:40:27,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697859545] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:27,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:27,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:27,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471607027] [2021-06-05 03:40:27,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:27,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:27,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:27,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:27,658 INFO L87 Difference]: Start difference. First operand 1270 states and 4965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:27,710 INFO L93 Difference]: Finished difference Result 2533 states and 9223 transitions. [2021-06-05 03:40:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:27,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:27,714 INFO L225 Difference]: With dead ends: 2533 [2021-06-05 03:40:27,714 INFO L226 Difference]: Without dead ends: 2374 [2021-06-05 03:40:27,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-06-05 03:40:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1286. [2021-06-05 03:40:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.901167315175097) internal successors, (5013), 1285 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5013 transitions. [2021-06-05 03:40:27,747 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5013 transitions. Word has length 25 [2021-06-05 03:40:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:27,747 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5013 transitions. [2021-06-05 03:40:27,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5013 transitions. [2021-06-05 03:40:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:27,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:27,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:27,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-06-05 03:40:27,749 INFO L430 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1791130951, now seen corresponding path program 490 times [2021-06-05 03:40:27,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:27,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739943726] [2021-06-05 03:40:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:27,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:27,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739943726] [2021-06-05 03:40:27,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739943726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:27,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:27,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:27,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048044538] [2021-06-05 03:40:27,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:27,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:27,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:27,825 INFO L87 Difference]: Start difference. First operand 1286 states and 5013 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:27,889 INFO L93 Difference]: Finished difference Result 2557 states and 9299 transitions. [2021-06-05 03:40:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:27,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:27,894 INFO L225 Difference]: With dead ends: 2557 [2021-06-05 03:40:27,894 INFO L226 Difference]: Without dead ends: 2358 [2021-06-05 03:40:27,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-06-05 03:40:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1270. [2021-06-05 03:40:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.906225374310481) internal successors, (4957), 1269 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4957 transitions. [2021-06-05 03:40:27,926 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4957 transitions. Word has length 25 [2021-06-05 03:40:27,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:27,927 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4957 transitions. [2021-06-05 03:40:27,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4957 transitions. [2021-06-05 03:40:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:27,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:27,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:27,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-06-05 03:40:27,928 INFO L430 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2054465637, now seen corresponding path program 491 times [2021-06-05 03:40:27,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:27,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941910851] [2021-06-05 03:40:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:28,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:28,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941910851] [2021-06-05 03:40:28,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941910851] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:28,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:28,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:28,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990801638] [2021-06-05 03:40:28,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:28,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:28,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:28,003 INFO L87 Difference]: Start difference. First operand 1270 states and 4957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:28,063 INFO L93 Difference]: Finished difference Result 2605 states and 9485 transitions. [2021-06-05 03:40:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:28,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:28,068 INFO L225 Difference]: With dead ends: 2605 [2021-06-05 03:40:28,068 INFO L226 Difference]: Without dead ends: 2416 [2021-06-05 03:40:28,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-06-05 03:40:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1298. [2021-06-05 03:40:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.889745566692367) internal successors, (5045), 1297 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5045 transitions. [2021-06-05 03:40:28,101 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5045 transitions. Word has length 25 [2021-06-05 03:40:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:28,101 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5045 transitions. [2021-06-05 03:40:28,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5045 transitions. [2021-06-05 03:40:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:28,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:28,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:28,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-06-05 03:40:28,103 INFO L430 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:28,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash 848357113, now seen corresponding path program 492 times [2021-06-05 03:40:28,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:28,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337206573] [2021-06-05 03:40:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:28,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:28,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337206573] [2021-06-05 03:40:28,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337206573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:28,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:28,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:28,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20173545] [2021-06-05 03:40:28,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:28,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:28,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:28,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:28,178 INFO L87 Difference]: Start difference. First operand 1298 states and 5045 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:28,240 INFO L93 Difference]: Finished difference Result 2599 states and 9440 transitions. [2021-06-05 03:40:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:28,245 INFO L225 Difference]: With dead ends: 2599 [2021-06-05 03:40:28,245 INFO L226 Difference]: Without dead ends: 2380 [2021-06-05 03:40:28,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-06-05 03:40:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1262. [2021-06-05 03:40:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.9119746233148294) internal successors, (4933), 1261 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4933 transitions. [2021-06-05 03:40:28,279 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4933 transitions. Word has length 25 [2021-06-05 03:40:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:28,279 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4933 transitions. [2021-06-05 03:40:28,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4933 transitions. [2021-06-05 03:40:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:28,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:28,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:28,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-06-05 03:40:28,281 INFO L430 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:28,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1395376357, now seen corresponding path program 493 times [2021-06-05 03:40:28,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:28,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531783575] [2021-06-05 03:40:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:28,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:28,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531783575] [2021-06-05 03:40:28,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531783575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:28,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:28,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:28,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144188231] [2021-06-05 03:40:28,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:28,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:28,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:28,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:28,368 INFO L87 Difference]: Start difference. First operand 1262 states and 4933 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:28,420 INFO L93 Difference]: Finished difference Result 2535 states and 9234 transitions. [2021-06-05 03:40:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:28,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:28,425 INFO L225 Difference]: With dead ends: 2535 [2021-06-05 03:40:28,425 INFO L226 Difference]: Without dead ends: 2376 [2021-06-05 03:40:28,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-06-05 03:40:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1286. [2021-06-05 03:40:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9042801556420232) internal successors, (5017), 1285 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5017 transitions. [2021-06-05 03:40:28,459 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5017 transitions. Word has length 25 [2021-06-05 03:40:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:28,459 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5017 transitions. [2021-06-05 03:40:28,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5017 transitions. [2021-06-05 03:40:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:28,461 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:28,461 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:28,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-06-05 03:40:28,461 INFO L430 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -387078373, now seen corresponding path program 494 times [2021-06-05 03:40:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:28,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706298213] [2021-06-05 03:40:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:28,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:28,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706298213] [2021-06-05 03:40:28,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706298213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:28,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:28,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:28,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157585071] [2021-06-05 03:40:28,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:28,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:28,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:28,548 INFO L87 Difference]: Start difference. First operand 1286 states and 5017 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:28,613 INFO L93 Difference]: Finished difference Result 2563 states and 9322 transitions. [2021-06-05 03:40:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:28,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:28,617 INFO L225 Difference]: With dead ends: 2563 [2021-06-05 03:40:28,617 INFO L226 Difference]: Without dead ends: 2360 [2021-06-05 03:40:28,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-06-05 03:40:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1270. [2021-06-05 03:40:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.909377462568952) internal successors, (4961), 1269 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2021-06-05 03:40:28,650 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2021-06-05 03:40:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:28,650 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2021-06-05 03:40:28,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2021-06-05 03:40:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:28,651 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:28,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:28,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-06-05 03:40:28,651 INFO L430 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:28,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2052793977, now seen corresponding path program 495 times [2021-06-05 03:40:28,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:28,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934999985] [2021-06-05 03:40:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:28,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:28,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934999985] [2021-06-05 03:40:28,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934999985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:28,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:28,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:28,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066259924] [2021-06-05 03:40:28,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:28,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:28,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:28,733 INFO L87 Difference]: Start difference. First operand 1270 states and 4961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:28,782 INFO L93 Difference]: Finished difference Result 2531 states and 9214 transitions. [2021-06-05 03:40:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:28,786 INFO L225 Difference]: With dead ends: 2531 [2021-06-05 03:40:28,786 INFO L226 Difference]: Without dead ends: 2372 [2021-06-05 03:40:28,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-06-05 03:40:28,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1286. [2021-06-05 03:40:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.898054474708171) internal successors, (5009), 1285 states have internal predecessors, (5009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5009 transitions. [2021-06-05 03:40:28,819 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5009 transitions. Word has length 25 [2021-06-05 03:40:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:28,819 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5009 transitions. [2021-06-05 03:40:28,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5009 transitions. [2021-06-05 03:40:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:28,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:28,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:28,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-06-05 03:40:28,821 INFO L430 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2022934299, now seen corresponding path program 496 times [2021-06-05 03:40:28,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:28,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199040572] [2021-06-05 03:40:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:28,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:28,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199040572] [2021-06-05 03:40:28,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199040572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:28,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:28,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:28,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897031224] [2021-06-05 03:40:28,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:28,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:28,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:28,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:28,907 INFO L87 Difference]: Start difference. First operand 1286 states and 5009 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:28,969 INFO L93 Difference]: Finished difference Result 2555 states and 9290 transitions. [2021-06-05 03:40:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:28,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:28,973 INFO L225 Difference]: With dead ends: 2555 [2021-06-05 03:40:28,974 INFO L226 Difference]: Without dead ends: 2356 [2021-06-05 03:40:28,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2021-06-05 03:40:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1270. [2021-06-05 03:40:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9030732860520096) internal successors, (4953), 1269 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4953 transitions. [2021-06-05 03:40:29,007 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4953 transitions. Word has length 25 [2021-06-05 03:40:29,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:29,007 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4953 transitions. [2021-06-05 03:40:29,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4953 transitions. [2021-06-05 03:40:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:29,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:29,009 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:29,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-06-05 03:40:29,009 INFO L430 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:29,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:29,009 INFO L82 PathProgramCache]: Analyzing trace with hash -337510629, now seen corresponding path program 497 times [2021-06-05 03:40:29,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:29,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666282925] [2021-06-05 03:40:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:29,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:29,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666282925] [2021-06-05 03:40:29,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666282925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:29,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:29,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:29,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497336546] [2021-06-05 03:40:29,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:29,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:29,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:29,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:29,085 INFO L87 Difference]: Start difference. First operand 1270 states and 4953 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:29,151 INFO L93 Difference]: Finished difference Result 2599 states and 9466 transitions. [2021-06-05 03:40:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:29,156 INFO L225 Difference]: With dead ends: 2599 [2021-06-05 03:40:29,156 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 03:40:29,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 03:40:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1298. [2021-06-05 03:40:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.8866615265998457) internal successors, (5041), 1297 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5041 transitions. [2021-06-05 03:40:29,190 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5041 transitions. Word has length 25 [2021-06-05 03:40:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:29,190 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5041 transitions. [2021-06-05 03:40:29,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5041 transitions. [2021-06-05 03:40:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:29,191 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:29,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:29,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-06-05 03:40:29,192 INFO L430 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1914119673, now seen corresponding path program 498 times [2021-06-05 03:40:29,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:29,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362290712] [2021-06-05 03:40:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:29,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:29,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362290712] [2021-06-05 03:40:29,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362290712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:29,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:29,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:29,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178746184] [2021-06-05 03:40:29,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:29,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:29,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:29,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:29,268 INFO L87 Difference]: Start difference. First operand 1298 states and 5041 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:29,333 INFO L93 Difference]: Finished difference Result 2595 states and 9426 transitions. [2021-06-05 03:40:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:29,338 INFO L225 Difference]: With dead ends: 2595 [2021-06-05 03:40:29,338 INFO L226 Difference]: Without dead ends: 2376 [2021-06-05 03:40:29,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-06-05 03:40:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1262. [2021-06-05 03:40:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.908802537668517) internal successors, (4929), 1261 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4929 transitions. [2021-06-05 03:40:29,370 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4929 transitions. Word has length 25 [2021-06-05 03:40:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:29,370 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4929 transitions. [2021-06-05 03:40:29,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4929 transitions. [2021-06-05 03:40:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:29,372 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:29,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:29,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-06-05 03:40:29,372 INFO L430 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash -671272067, now seen corresponding path program 499 times [2021-06-05 03:40:29,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:29,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556466816] [2021-06-05 03:40:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:29,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:29,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556466816] [2021-06-05 03:40:29,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556466816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:29,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:29,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:29,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139064580] [2021-06-05 03:40:29,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:29,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:29,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:29,447 INFO L87 Difference]: Start difference. First operand 1262 states and 4929 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:29,507 INFO L93 Difference]: Finished difference Result 2671 states and 9756 transitions. [2021-06-05 03:40:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:29,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:29,512 INFO L225 Difference]: With dead ends: 2671 [2021-06-05 03:40:29,512 INFO L226 Difference]: Without dead ends: 2482 [2021-06-05 03:40:29,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-06-05 03:40:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1306. [2021-06-05 03:40:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.8980842911877396) internal successors, (5087), 1305 states have internal predecessors, (5087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5087 transitions. [2021-06-05 03:40:29,547 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5087 transitions. Word has length 25 [2021-06-05 03:40:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:29,547 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5087 transitions. [2021-06-05 03:40:29,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5087 transitions. [2021-06-05 03:40:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:29,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:29,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:29,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-06-05 03:40:29,549 INFO L430 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:29,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1580358235, now seen corresponding path program 500 times [2021-06-05 03:40:29,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:29,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104019519] [2021-06-05 03:40:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:29,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:29,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104019519] [2021-06-05 03:40:29,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104019519] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:29,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:29,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:29,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272725842] [2021-06-05 03:40:29,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:29,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:29,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:29,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:29,625 INFO L87 Difference]: Start difference. First operand 1306 states and 5087 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:29,685 INFO L93 Difference]: Finished difference Result 2669 states and 9721 transitions. [2021-06-05 03:40:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:29,689 INFO L225 Difference]: With dead ends: 2669 [2021-06-05 03:40:29,690 INFO L226 Difference]: Without dead ends: 2452 [2021-06-05 03:40:29,690 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2021-06-05 03:40:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 1276. [2021-06-05 03:40:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9058823529411764) internal successors, (4980), 1275 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4980 transitions. [2021-06-05 03:40:29,723 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4980 transitions. Word has length 25 [2021-06-05 03:40:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:29,723 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4980 transitions. [2021-06-05 03:40:29,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4980 transitions. [2021-06-05 03:40:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:29,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:29,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:29,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-06-05 03:40:29,725 INFO L430 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:29,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1518069029, now seen corresponding path program 501 times [2021-06-05 03:40:29,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:29,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290005564] [2021-06-05 03:40:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:29,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:29,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290005564] [2021-06-05 03:40:29,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290005564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:29,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:29,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:29,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293876170] [2021-06-05 03:40:29,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:29,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:29,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:29,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:29,801 INFO L87 Difference]: Start difference. First operand 1276 states and 4980 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:29,860 INFO L93 Difference]: Finished difference Result 2665 states and 9723 transitions. [2021-06-05 03:40:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:29,865 INFO L225 Difference]: With dead ends: 2665 [2021-06-05 03:40:29,865 INFO L226 Difference]: Without dead ends: 2476 [2021-06-05 03:40:29,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-06-05 03:40:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1304. [2021-06-05 03:40:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 3.889485801995395) internal successors, (5068), 1303 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5068 transitions. [2021-06-05 03:40:29,899 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5068 transitions. Word has length 25 [2021-06-05 03:40:29,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:29,899 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 5068 transitions. [2021-06-05 03:40:29,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:29,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5068 transitions. [2021-06-05 03:40:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:29,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:29,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:29,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-06-05 03:40:29,901 INFO L430 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:29,901 INFO L82 PathProgramCache]: Analyzing trace with hash -325602597, now seen corresponding path program 502 times [2021-06-05 03:40:29,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:29,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946155829] [2021-06-05 03:40:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:29,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:29,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946155829] [2021-06-05 03:40:29,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946155829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:29,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:29,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:29,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732327146] [2021-06-05 03:40:29,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:29,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:29,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:29,976 INFO L87 Difference]: Start difference. First operand 1304 states and 5068 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:30,040 INFO L93 Difference]: Finished difference Result 2659 states and 9678 transitions. [2021-06-05 03:40:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:30,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:30,045 INFO L225 Difference]: With dead ends: 2659 [2021-06-05 03:40:30,045 INFO L226 Difference]: Without dead ends: 2448 [2021-06-05 03:40:30,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-06-05 03:40:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1276. [2021-06-05 03:40:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.894901960784314) internal successors, (4966), 1275 states have internal predecessors, (4966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4966 transitions. [2021-06-05 03:40:30,078 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4966 transitions. Word has length 25 [2021-06-05 03:40:30,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:30,078 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4966 transitions. [2021-06-05 03:40:30,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4966 transitions. [2021-06-05 03:40:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:30,079 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:30,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:30,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-06-05 03:40:30,079 INFO L430 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:30,080 INFO L82 PathProgramCache]: Analyzing trace with hash -535721415, now seen corresponding path program 503 times [2021-06-05 03:40:30,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:30,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555136472] [2021-06-05 03:40:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:30,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:30,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555136472] [2021-06-05 03:40:30,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555136472] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:30,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:30,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:30,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453889556] [2021-06-05 03:40:30,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:30,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:30,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:30,170 INFO L87 Difference]: Start difference. First operand 1276 states and 4966 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:30,248 INFO L93 Difference]: Finished difference Result 2661 states and 9699 transitions. [2021-06-05 03:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:30,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:30,255 INFO L225 Difference]: With dead ends: 2661 [2021-06-05 03:40:30,255 INFO L226 Difference]: Without dead ends: 2474 [2021-06-05 03:40:30,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-06-05 03:40:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1304. [2021-06-05 03:40:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 3.878741366078281) internal successors, (5054), 1303 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5054 transitions. [2021-06-05 03:40:30,303 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5054 transitions. Word has length 25 [2021-06-05 03:40:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:30,303 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 5054 transitions. [2021-06-05 03:40:30,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5054 transitions. [2021-06-05 03:40:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:30,306 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:30,306 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:30,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-06-05 03:40:30,306 INFO L430 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash 545341211, now seen corresponding path program 504 times [2021-06-05 03:40:30,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:30,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620961253] [2021-06-05 03:40:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:30,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:30,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620961253] [2021-06-05 03:40:30,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620961253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:30,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:30,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:30,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471578270] [2021-06-05 03:40:30,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:30,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:30,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:30,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:30,408 INFO L87 Difference]: Start difference. First operand 1304 states and 5054 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:30,502 INFO L93 Difference]: Finished difference Result 2657 states and 9659 transitions. [2021-06-05 03:40:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:30,508 INFO L225 Difference]: With dead ends: 2657 [2021-06-05 03:40:30,508 INFO L226 Difference]: Without dead ends: 2428 [2021-06-05 03:40:30,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-06-05 03:40:30,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1258. [2021-06-05 03:40:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.913285600636436) internal successors, (4919), 1257 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4919 transitions. [2021-06-05 03:40:30,547 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4919 transitions. Word has length 25 [2021-06-05 03:40:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:30,547 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4919 transitions. [2021-06-05 03:40:30,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4919 transitions. [2021-06-05 03:40:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:30,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:30,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:30,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-06-05 03:40:30,549 INFO L430 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:30,549 INFO L82 PathProgramCache]: Analyzing trace with hash 407122489, now seen corresponding path program 505 times [2021-06-05 03:40:30,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:30,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372677678] [2021-06-05 03:40:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:30,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:30,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372677678] [2021-06-05 03:40:30,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372677678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:30,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:30,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:30,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614912823] [2021-06-05 03:40:30,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:30,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:30,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:30,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:30,640 INFO L87 Difference]: Start difference. First operand 1258 states and 4919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:30,694 INFO L93 Difference]: Finished difference Result 2515 states and 9144 transitions. [2021-06-05 03:40:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:30,698 INFO L225 Difference]: With dead ends: 2515 [2021-06-05 03:40:30,698 INFO L226 Difference]: Without dead ends: 2356 [2021-06-05 03:40:30,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2021-06-05 03:40:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1274. [2021-06-05 03:40:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.9018067556952083) internal successors, (4967), 1273 states have internal predecessors, (4967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4967 transitions. [2021-06-05 03:40:30,731 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4967 transitions. Word has length 25 [2021-06-05 03:40:30,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:30,731 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4967 transitions. [2021-06-05 03:40:30,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4967 transitions. [2021-06-05 03:40:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:30,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:30,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:30,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-06-05 03:40:30,733 INFO L430 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:30,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1182812261, now seen corresponding path program 506 times [2021-06-05 03:40:30,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:30,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946867163] [2021-06-05 03:40:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:30,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:30,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946867163] [2021-06-05 03:40:30,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946867163] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:30,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:30,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:30,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793691470] [2021-06-05 03:40:30,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:30,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:30,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:30,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:30,826 INFO L87 Difference]: Start difference. First operand 1274 states and 4967 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:30,896 INFO L93 Difference]: Finished difference Result 2545 states and 9237 transitions. [2021-06-05 03:40:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:30,900 INFO L225 Difference]: With dead ends: 2545 [2021-06-05 03:40:30,900 INFO L226 Difference]: Without dead ends: 2340 [2021-06-05 03:40:30,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-06-05 03:40:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1258. [2021-06-05 03:40:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.9069212410501195) internal successors, (4911), 1257 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4911 transitions. [2021-06-05 03:40:30,932 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4911 transitions. Word has length 25 [2021-06-05 03:40:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:30,932 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4911 transitions. [2021-06-05 03:40:30,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4911 transitions. [2021-06-05 03:40:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:30,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:30,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:30,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-06-05 03:40:30,934 INFO L430 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1488185115, now seen corresponding path program 507 times [2021-06-05 03:40:30,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:30,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218661201] [2021-06-05 03:40:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:31,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:31,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218661201] [2021-06-05 03:40:31,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218661201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:31,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:31,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:31,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662239189] [2021-06-05 03:40:31,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:31,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:31,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:31,031 INFO L87 Difference]: Start difference. First operand 1258 states and 4911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:31,092 INFO L93 Difference]: Finished difference Result 2513 states and 9131 transitions. [2021-06-05 03:40:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:31,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:31,097 INFO L225 Difference]: With dead ends: 2513 [2021-06-05 03:40:31,097 INFO L226 Difference]: Without dead ends: 2354 [2021-06-05 03:40:31,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-06-05 03:40:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1274. [2021-06-05 03:40:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.8955223880597014) internal successors, (4959), 1273 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4959 transitions. [2021-06-05 03:40:31,132 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4959 transitions. Word has length 25 [2021-06-05 03:40:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:31,132 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4959 transitions. [2021-06-05 03:40:31,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4959 transitions. [2021-06-05 03:40:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:31,133 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:31,133 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:31,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-06-05 03:40:31,134 INFO L430 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:31,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1798484197, now seen corresponding path program 508 times [2021-06-05 03:40:31,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:31,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82974240] [2021-06-05 03:40:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:31,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:31,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82974240] [2021-06-05 03:40:31,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82974240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:31,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:31,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:31,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149849127] [2021-06-05 03:40:31,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:31,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:31,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:31,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:31,238 INFO L87 Difference]: Start difference. First operand 1274 states and 4959 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:31,304 INFO L93 Difference]: Finished difference Result 2541 states and 9219 transitions. [2021-06-05 03:40:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:31,308 INFO L225 Difference]: With dead ends: 2541 [2021-06-05 03:40:31,308 INFO L226 Difference]: Without dead ends: 2338 [2021-06-05 03:40:31,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-06-05 03:40:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1258. [2021-06-05 03:40:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.9005568814638027) internal successors, (4903), 1257 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4903 transitions. [2021-06-05 03:40:31,341 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4903 transitions. Word has length 25 [2021-06-05 03:40:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:31,341 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4903 transitions. [2021-06-05 03:40:31,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4903 transitions. [2021-06-05 03:40:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:31,342 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:31,342 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:31,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-06-05 03:40:31,342 INFO L430 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1389620227, now seen corresponding path program 509 times [2021-06-05 03:40:31,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:31,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231857147] [2021-06-05 03:40:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:31,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:31,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231857147] [2021-06-05 03:40:31,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231857147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:31,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:31,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:31,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533697443] [2021-06-05 03:40:31,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:31,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:31,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:31,447 INFO L87 Difference]: Start difference. First operand 1258 states and 4903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:31,507 INFO L93 Difference]: Finished difference Result 2587 states and 9400 transitions. [2021-06-05 03:40:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:31,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:31,512 INFO L225 Difference]: With dead ends: 2587 [2021-06-05 03:40:31,512 INFO L226 Difference]: Without dead ends: 2398 [2021-06-05 03:40:31,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-06-05 03:40:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1288. [2021-06-05 03:40:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.8818958818958818) internal successors, (4996), 1287 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 4996 transitions. [2021-06-05 03:40:31,545 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 4996 transitions. Word has length 25 [2021-06-05 03:40:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:31,545 INFO L482 AbstractCegarLoop]: Abstraction has 1288 states and 4996 transitions. [2021-06-05 03:40:31,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 4996 transitions. [2021-06-05 03:40:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:31,546 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:31,546 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:31,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-06-05 03:40:31,546 INFO L430 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash 862010075, now seen corresponding path program 510 times [2021-06-05 03:40:31,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:31,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484314337] [2021-06-05 03:40:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:31,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:31,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484314337] [2021-06-05 03:40:31,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484314337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:31,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:31,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:31,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771114917] [2021-06-05 03:40:31,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:31,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:31,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:31,653 INFO L87 Difference]: Start difference. First operand 1288 states and 4996 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:31,717 INFO L93 Difference]: Finished difference Result 2585 states and 9365 transitions. [2021-06-05 03:40:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:31,721 INFO L225 Difference]: With dead ends: 2585 [2021-06-05 03:40:31,722 INFO L226 Difference]: Without dead ends: 2360 [2021-06-05 03:40:31,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-06-05 03:40:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1250. [2021-06-05 03:40:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.9063250600480384) internal successors, (4879), 1249 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4879 transitions. [2021-06-05 03:40:31,753 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4879 transitions. Word has length 25 [2021-06-05 03:40:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:31,753 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4879 transitions. [2021-06-05 03:40:31,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4879 transitions. [2021-06-05 03:40:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:31,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:31,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:31,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-06-05 03:40:31,755 INFO L430 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1500092985, now seen corresponding path program 511 times [2021-06-05 03:40:31,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:31,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074378836] [2021-06-05 03:40:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:31,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:31,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074378836] [2021-06-05 03:40:31,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074378836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:31,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:31,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:31,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269646181] [2021-06-05 03:40:31,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:31,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:31,847 INFO L87 Difference]: Start difference. First operand 1250 states and 4879 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:31,899 INFO L93 Difference]: Finished difference Result 2481 states and 9013 transitions. [2021-06-05 03:40:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:31,904 INFO L225 Difference]: With dead ends: 2481 [2021-06-05 03:40:31,904 INFO L226 Difference]: Without dead ends: 2322 [2021-06-05 03:40:31,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:31,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-06-05 03:40:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1274. [2021-06-05 03:40:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.898664571877455) internal successors, (4963), 1273 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4963 transitions. [2021-06-05 03:40:31,936 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4963 transitions. Word has length 25 [2021-06-05 03:40:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:31,936 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4963 transitions. [2021-06-05 03:40:31,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4963 transitions. [2021-06-05 03:40:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:31,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:31,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:31,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-06-05 03:40:31,938 INFO L430 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash -89841765, now seen corresponding path program 512 times [2021-06-05 03:40:31,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:31,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174516985] [2021-06-05 03:40:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:32,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:32,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174516985] [2021-06-05 03:40:32,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174516985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:32,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:32,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:32,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834850092] [2021-06-05 03:40:32,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:32,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:32,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:32,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:32,031 INFO L87 Difference]: Start difference. First operand 1274 states and 4963 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:32,100 INFO L93 Difference]: Finished difference Result 2511 states and 9106 transitions. [2021-06-05 03:40:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:32,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:32,104 INFO L225 Difference]: With dead ends: 2511 [2021-06-05 03:40:32,105 INFO L226 Difference]: Without dead ends: 2306 [2021-06-05 03:40:32,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:32,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-06-05 03:40:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1258. [2021-06-05 03:40:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.903739061256961) internal successors, (4907), 1257 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4907 transitions. [2021-06-05 03:40:32,136 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4907 transitions. Word has length 25 [2021-06-05 03:40:32,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:32,136 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4907 transitions. [2021-06-05 03:40:32,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4907 transitions. [2021-06-05 03:40:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:32,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:32,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:32,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-06-05 03:40:32,138 INFO L430 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:32,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:32,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1549660729, now seen corresponding path program 513 times [2021-06-05 03:40:32,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:32,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760042581] [2021-06-05 03:40:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:32,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:32,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760042581] [2021-06-05 03:40:32,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760042581] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:32,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:32,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:32,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961896243] [2021-06-05 03:40:32,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:32,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:32,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:32,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:32,224 INFO L87 Difference]: Start difference. First operand 1258 states and 4907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:32,276 INFO L93 Difference]: Finished difference Result 2435 states and 8848 transitions. [2021-06-05 03:40:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:32,281 INFO L225 Difference]: With dead ends: 2435 [2021-06-05 03:40:32,281 INFO L226 Difference]: Without dead ends: 2276 [2021-06-05 03:40:32,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2021-06-05 03:40:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 1274. [2021-06-05 03:40:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.892380204241948) internal successors, (4955), 1273 states have internal predecessors, (4955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4955 transitions. [2021-06-05 03:40:32,314 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4955 transitions. Word has length 25 [2021-06-05 03:40:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:32,314 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4955 transitions. [2021-06-05 03:40:32,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4955 transitions. [2021-06-05 03:40:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:32,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:32,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:32,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-06-05 03:40:32,315 INFO L430 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash -392611271, now seen corresponding path program 514 times [2021-06-05 03:40:32,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:32,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505227526] [2021-06-05 03:40:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:32,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:32,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505227526] [2021-06-05 03:40:32,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505227526] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:32,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:32,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:32,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82641684] [2021-06-05 03:40:32,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:32,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:32,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:32,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:32,400 INFO L87 Difference]: Start difference. First operand 1274 states and 4955 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:32,463 INFO L93 Difference]: Finished difference Result 2323 states and 8511 transitions. [2021-06-05 03:40:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:32,468 INFO L225 Difference]: With dead ends: 2323 [2021-06-05 03:40:32,468 INFO L226 Difference]: Without dead ends: 2132 [2021-06-05 03:40:32,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2021-06-05 03:40:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1258. [2021-06-05 03:40:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.8973747016706444) internal successors, (4899), 1257 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4899 transitions. [2021-06-05 03:40:32,499 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4899 transitions. Word has length 25 [2021-06-05 03:40:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:32,499 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4899 transitions. [2021-06-05 03:40:32,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4899 transitions. [2021-06-05 03:40:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:32,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:32,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:32,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-06-05 03:40:32,501 INFO L430 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:32,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:32,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1328144613, now seen corresponding path program 515 times [2021-06-05 03:40:32,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:32,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060082840] [2021-06-05 03:40:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:32,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:32,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060082840] [2021-06-05 03:40:32,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060082840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:32,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:32,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:32,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746246204] [2021-06-05 03:40:32,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:32,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:32,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:32,597 INFO L87 Difference]: Start difference. First operand 1258 states and 4899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:32,665 INFO L93 Difference]: Finished difference Result 2473 states and 8985 transitions. [2021-06-05 03:40:32,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:32,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:32,669 INFO L225 Difference]: With dead ends: 2473 [2021-06-05 03:40:32,670 INFO L226 Difference]: Without dead ends: 2284 [2021-06-05 03:40:32,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2021-06-05 03:40:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1282. [2021-06-05 03:40:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.8836846213895395) internal successors, (4975), 1281 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4975 transitions. [2021-06-05 03:40:32,704 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4975 transitions. Word has length 25 [2021-06-05 03:40:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:32,704 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 4975 transitions. [2021-06-05 03:40:32,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4975 transitions. [2021-06-05 03:40:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:32,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:32,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:32,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-06-05 03:40:32,706 INFO L430 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:32,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2069096711, now seen corresponding path program 516 times [2021-06-05 03:40:32,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:32,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101868604] [2021-06-05 03:40:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:32,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:32,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101868604] [2021-06-05 03:40:32,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101868604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:32,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:32,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:32,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017305094] [2021-06-05 03:40:32,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:32,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:32,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:32,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:32,801 INFO L87 Difference]: Start difference. First operand 1282 states and 4975 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:32,863 INFO L93 Difference]: Finished difference Result 2331 states and 8531 transitions. [2021-06-05 03:40:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:32,867 INFO L225 Difference]: With dead ends: 2331 [2021-06-05 03:40:32,867 INFO L226 Difference]: Without dead ends: 2124 [2021-06-05 03:40:32,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-06-05 03:40:32,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1250. [2021-06-05 03:40:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.9031224979983987) internal successors, (4875), 1249 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4875 transitions. [2021-06-05 03:40:32,898 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4875 transitions. Word has length 25 [2021-06-05 03:40:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:32,898 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4875 transitions. [2021-06-05 03:40:32,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4875 transitions. [2021-06-05 03:40:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:32,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:32,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:32,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-06-05 03:40:32,900 INFO L430 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1888097947, now seen corresponding path program 517 times [2021-06-05 03:40:32,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:32,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033349650] [2021-06-05 03:40:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:32,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:32,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033349650] [2021-06-05 03:40:32,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033349650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:32,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:32,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:32,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805306445] [2021-06-05 03:40:32,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:32,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:32,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:32,985 INFO L87 Difference]: Start difference. First operand 1250 states and 4875 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:33,037 INFO L93 Difference]: Finished difference Result 2477 states and 8999 transitions. [2021-06-05 03:40:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:33,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:33,042 INFO L225 Difference]: With dead ends: 2477 [2021-06-05 03:40:33,042 INFO L226 Difference]: Without dead ends: 2318 [2021-06-05 03:40:33,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-06-05 03:40:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1274. [2021-06-05 03:40:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.8955223880597014) internal successors, (4959), 1273 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4959 transitions. [2021-06-05 03:40:33,075 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4959 transitions. Word has length 25 [2021-06-05 03:40:33,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:33,075 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4959 transitions. [2021-06-05 03:40:33,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4959 transitions. [2021-06-05 03:40:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:33,076 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:33,076 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:33,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-06-05 03:40:33,076 INFO L430 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:33,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1398571365, now seen corresponding path program 518 times [2021-06-05 03:40:33,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:33,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93713273] [2021-06-05 03:40:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:33,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:33,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93713273] [2021-06-05 03:40:33,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93713273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:33,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:33,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:33,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638665800] [2021-06-05 03:40:33,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:33,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:33,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:33,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:33,161 INFO L87 Difference]: Start difference. First operand 1274 states and 4959 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:33,234 INFO L93 Difference]: Finished difference Result 2505 states and 9087 transitions. [2021-06-05 03:40:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:33,239 INFO L225 Difference]: With dead ends: 2505 [2021-06-05 03:40:33,239 INFO L226 Difference]: Without dead ends: 2302 [2021-06-05 03:40:33,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-06-05 03:40:33,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1258. [2021-06-05 03:40:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.9005568814638027) internal successors, (4903), 1257 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4903 transitions. [2021-06-05 03:40:33,270 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4903 transitions. Word has length 25 [2021-06-05 03:40:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:33,271 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4903 transitions. [2021-06-05 03:40:33,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4903 transitions. [2021-06-05 03:40:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:33,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:33,272 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:33,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-06-05 03:40:33,272 INFO L430 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:33,272 INFO L82 PathProgramCache]: Analyzing trace with hash -227981703, now seen corresponding path program 519 times [2021-06-05 03:40:33,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:33,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259422973] [2021-06-05 03:40:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:33,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:33,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259422973] [2021-06-05 03:40:33,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259422973] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:33,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:33,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:33,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998192720] [2021-06-05 03:40:33,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:33,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:33,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:33,353 INFO L87 Difference]: Start difference. First operand 1258 states and 4903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:33,407 INFO L93 Difference]: Finished difference Result 2433 states and 8839 transitions. [2021-06-05 03:40:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:33,412 INFO L225 Difference]: With dead ends: 2433 [2021-06-05 03:40:33,412 INFO L226 Difference]: Without dead ends: 2274 [2021-06-05 03:40:33,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:33,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-06-05 03:40:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1274. [2021-06-05 03:40:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.889238020424195) internal successors, (4951), 1273 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4951 transitions. [2021-06-05 03:40:33,445 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4951 transitions. Word has length 25 [2021-06-05 03:40:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:33,445 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4951 transitions. [2021-06-05 03:40:33,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4951 transitions. [2021-06-05 03:40:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:33,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:33,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:33,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-06-05 03:40:33,447 INFO L430 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:33,448 INFO L82 PathProgramCache]: Analyzing trace with hash -873513317, now seen corresponding path program 520 times [2021-06-05 03:40:33,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:33,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257346275] [2021-06-05 03:40:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:33,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:33,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257346275] [2021-06-05 03:40:33,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257346275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:33,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:33,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:33,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476629156] [2021-06-05 03:40:33,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:33,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:33,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:33,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:33,536 INFO L87 Difference]: Start difference. First operand 1274 states and 4951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:33,603 INFO L93 Difference]: Finished difference Result 2321 states and 8502 transitions. [2021-06-05 03:40:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:33,607 INFO L225 Difference]: With dead ends: 2321 [2021-06-05 03:40:33,607 INFO L226 Difference]: Without dead ends: 2130 [2021-06-05 03:40:33,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2021-06-05 03:40:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1258. [2021-06-05 03:40:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.894192521877486) internal successors, (4895), 1257 states have internal predecessors, (4895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4895 transitions. [2021-06-05 03:40:33,639 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4895 transitions. Word has length 25 [2021-06-05 03:40:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:33,639 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4895 transitions. [2021-06-05 03:40:33,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4895 transitions. [2021-06-05 03:40:33,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:33,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:33,641 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:33,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-06-05 03:40:33,641 INFO L430 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:33,641 INFO L82 PathProgramCache]: Analyzing trace with hash 388810395, now seen corresponding path program 521 times [2021-06-05 03:40:33,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:33,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304270877] [2021-06-05 03:40:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:33,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:33,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304270877] [2021-06-05 03:40:33,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304270877] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:33,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:33,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:33,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308811158] [2021-06-05 03:40:33,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:33,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:33,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:33,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:33,727 INFO L87 Difference]: Start difference. First operand 1258 states and 4895 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:33,796 INFO L93 Difference]: Finished difference Result 2469 states and 8971 transitions. [2021-06-05 03:40:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:33,800 INFO L225 Difference]: With dead ends: 2469 [2021-06-05 03:40:33,801 INFO L226 Difference]: Without dead ends: 2282 [2021-06-05 03:40:33,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-06-05 03:40:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1282. [2021-06-05 03:40:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.88056206088993) internal successors, (4971), 1281 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4971 transitions. [2021-06-05 03:40:33,834 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4971 transitions. Word has length 25 [2021-06-05 03:40:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:33,834 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 4971 transitions. [2021-06-05 03:40:33,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4971 transitions. [2021-06-05 03:40:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:33,836 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:33,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:33,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-06-05 03:40:33,836 INFO L430 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1003334151, now seen corresponding path program 522 times [2021-06-05 03:40:33,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:33,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162781715] [2021-06-05 03:40:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:33,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:33,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162781715] [2021-06-05 03:40:33,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162781715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:33,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:33,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:33,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444687561] [2021-06-05 03:40:33,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:33,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:33,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:33,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:33,913 INFO L87 Difference]: Start difference. First operand 1282 states and 4971 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:33,977 INFO L93 Difference]: Finished difference Result 2329 states and 8522 transitions. [2021-06-05 03:40:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:33,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:33,981 INFO L225 Difference]: With dead ends: 2329 [2021-06-05 03:40:33,981 INFO L226 Difference]: Without dead ends: 2122 [2021-06-05 03:40:33,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-06-05 03:40:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1250. [2021-06-05 03:40:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.899919935948759) internal successors, (4871), 1249 states have internal predecessors, (4871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4871 transitions. [2021-06-05 03:40:34,022 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4871 transitions. Word has length 25 [2021-06-05 03:40:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:34,022 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4871 transitions. [2021-06-05 03:40:34,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4871 transitions. [2021-06-05 03:40:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:34,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:34,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:34,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-06-05 03:40:34,024 INFO L430 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:34,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1682765059, now seen corresponding path program 523 times [2021-06-05 03:40:34,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:34,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441518007] [2021-06-05 03:40:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:34,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:34,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441518007] [2021-06-05 03:40:34,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441518007] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:34,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:34,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:34,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860714715] [2021-06-05 03:40:34,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:34,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:34,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:34,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:34,099 INFO L87 Difference]: Start difference. First operand 1250 states and 4871 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:34,165 INFO L93 Difference]: Finished difference Result 2593 states and 9437 transitions. [2021-06-05 03:40:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:34,170 INFO L225 Difference]: With dead ends: 2593 [2021-06-05 03:40:34,170 INFO L226 Difference]: Without dead ends: 2404 [2021-06-05 03:40:34,170 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-06-05 03:40:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1292. [2021-06-05 03:40:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 3.8884585592563905) internal successors, (5020), 1291 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 5020 transitions. [2021-06-05 03:40:34,204 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 5020 transitions. Word has length 25 [2021-06-05 03:40:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:34,204 INFO L482 AbstractCegarLoop]: Abstraction has 1292 states and 5020 transitions. [2021-06-05 03:40:34,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 5020 transitions. [2021-06-05 03:40:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:34,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:34,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:34,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-06-05 03:40:34,206 INFO L430 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:34,206 INFO L82 PathProgramCache]: Analyzing trace with hash 568865243, now seen corresponding path program 524 times [2021-06-05 03:40:34,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:34,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373835860] [2021-06-05 03:40:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:34,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:34,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373835860] [2021-06-05 03:40:34,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373835860] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:34,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:34,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780468947] [2021-06-05 03:40:34,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:34,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:34,285 INFO L87 Difference]: Start difference. First operand 1292 states and 5020 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:34,348 INFO L93 Difference]: Finished difference Result 2591 states and 9402 transitions. [2021-06-05 03:40:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:34,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:34,353 INFO L225 Difference]: With dead ends: 2591 [2021-06-05 03:40:34,353 INFO L226 Difference]: Without dead ends: 2374 [2021-06-05 03:40:34,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-06-05 03:40:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1262. [2021-06-05 03:40:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.8977002379064234) internal successors, (4915), 1261 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4915 transitions. [2021-06-05 03:40:34,387 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4915 transitions. Word has length 25 [2021-06-05 03:40:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:34,387 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4915 transitions. [2021-06-05 03:40:34,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4915 transitions. [2021-06-05 03:40:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:34,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:34,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:34,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-06-05 03:40:34,389 INFO L430 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash 496122587, now seen corresponding path program 525 times [2021-06-05 03:40:34,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:34,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169551301] [2021-06-05 03:40:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:34,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:34,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169551301] [2021-06-05 03:40:34,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169551301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:34,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:34,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:34,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861170971] [2021-06-05 03:40:34,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:34,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:34,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:34,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:34,474 INFO L87 Difference]: Start difference. First operand 1262 states and 4915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:34,542 INFO L93 Difference]: Finished difference Result 2513 states and 9141 transitions. [2021-06-05 03:40:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:34,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:34,546 INFO L225 Difference]: With dead ends: 2513 [2021-06-05 03:40:34,547 INFO L226 Difference]: Without dead ends: 2324 [2021-06-05 03:40:34,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2021-06-05 03:40:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1286. [2021-06-05 03:40:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.884046692607004) internal successors, (4991), 1285 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4991 transitions. [2021-06-05 03:40:34,581 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4991 transitions. Word has length 25 [2021-06-05 03:40:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:34,581 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 4991 transitions. [2021-06-05 03:40:34,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4991 transitions. [2021-06-05 03:40:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:34,583 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:34,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:34,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-06-05 03:40:34,583 INFO L430 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:34,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1051910875, now seen corresponding path program 526 times [2021-06-05 03:40:34,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:34,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042380694] [2021-06-05 03:40:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:34,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:34,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042380694] [2021-06-05 03:40:34,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042380694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:34,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:34,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:34,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877356197] [2021-06-05 03:40:34,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:34,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:34,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:34,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:34,669 INFO L87 Difference]: Start difference. First operand 1286 states and 4991 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:34,733 INFO L93 Difference]: Finished difference Result 2371 states and 8687 transitions. [2021-06-05 03:40:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:34,737 INFO L225 Difference]: With dead ends: 2371 [2021-06-05 03:40:34,737 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 03:40:34,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 03:40:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1262. [2021-06-05 03:40:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.888183980967486) internal successors, (4903), 1261 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4903 transitions. [2021-06-05 03:40:34,769 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4903 transitions. Word has length 25 [2021-06-05 03:40:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:34,769 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4903 transitions. [2021-06-05 03:40:34,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4903 transitions. [2021-06-05 03:40:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:34,770 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:34,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:34,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-06-05 03:40:34,771 INFO L430 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:34,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1478470201, now seen corresponding path program 527 times [2021-06-05 03:40:34,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:34,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41120653] [2021-06-05 03:40:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:34,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:34,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41120653] [2021-06-05 03:40:34,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41120653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:34,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:34,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:34,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986330137] [2021-06-05 03:40:34,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:34,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:34,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:34,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:34,847 INFO L87 Difference]: Start difference. First operand 1262 states and 4903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:34,913 INFO L93 Difference]: Finished difference Result 2511 states and 9124 transitions. [2021-06-05 03:40:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:34,918 INFO L225 Difference]: With dead ends: 2511 [2021-06-05 03:40:34,918 INFO L226 Difference]: Without dead ends: 2324 [2021-06-05 03:40:34,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2021-06-05 03:40:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1286. [2021-06-05 03:40:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.8747081712062257) internal successors, (4979), 1285 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4979 transitions. [2021-06-05 03:40:34,950 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4979 transitions. Word has length 25 [2021-06-05 03:40:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:34,950 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 4979 transitions. [2021-06-05 03:40:34,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4979 transitions. [2021-06-05 03:40:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:34,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:34,952 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:34,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-06-05 03:40:34,952 INFO L430 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1271662235, now seen corresponding path program 528 times [2021-06-05 03:40:34,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:34,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875053682] [2021-06-05 03:40:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:35,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:35,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875053682] [2021-06-05 03:40:35,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875053682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:35,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:35,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:35,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443467561] [2021-06-05 03:40:35,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:35,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:35,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:35,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:35,027 INFO L87 Difference]: Start difference. First operand 1286 states and 4979 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:35,089 INFO L93 Difference]: Finished difference Result 2371 states and 8675 transitions. [2021-06-05 03:40:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:35,094 INFO L225 Difference]: With dead ends: 2371 [2021-06-05 03:40:35,094 INFO L226 Difference]: Without dead ends: 2156 [2021-06-05 03:40:35,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-06-05 03:40:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1246. [2021-06-05 03:40:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.9044176706827307) internal successors, (4861), 1245 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4861 transitions. [2021-06-05 03:40:35,126 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4861 transitions. Word has length 25 [2021-06-05 03:40:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:35,126 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4861 transitions. [2021-06-05 03:40:35,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4861 transitions. [2021-06-05 03:40:35,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:35,128 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:35,128 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:35,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-06-05 03:40:35,128 INFO L430 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:35,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:35,128 INFO L82 PathProgramCache]: Analyzing trace with hash -382263781, now seen corresponding path program 529 times [2021-06-05 03:40:35,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:35,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265720448] [2021-06-05 03:40:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:35,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:35,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265720448] [2021-06-05 03:40:35,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265720448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:35,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:35,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:35,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671541494] [2021-06-05 03:40:35,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:35,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:35,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:35,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:35,215 INFO L87 Difference]: Start difference. First operand 1246 states and 4861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:35,271 INFO L93 Difference]: Finished difference Result 2475 states and 8984 transitions. [2021-06-05 03:40:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:35,276 INFO L225 Difference]: With dead ends: 2475 [2021-06-05 03:40:35,276 INFO L226 Difference]: Without dead ends: 2316 [2021-06-05 03:40:35,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-06-05 03:40:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1262. [2021-06-05 03:40:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.8929421094369547) internal successors, (4909), 1261 states have internal predecessors, (4909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4909 transitions. [2021-06-05 03:40:35,309 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4909 transitions. Word has length 25 [2021-06-05 03:40:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:35,309 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4909 transitions. [2021-06-05 03:40:35,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4909 transitions. [2021-06-05 03:40:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:35,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:35,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:35,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-06-05 03:40:35,311 INFO L430 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1972198531, now seen corresponding path program 530 times [2021-06-05 03:40:35,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:35,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810190102] [2021-06-05 03:40:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:35,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:35,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810190102] [2021-06-05 03:40:35,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810190102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:35,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:35,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:35,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862029331] [2021-06-05 03:40:35,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:35,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:35,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:35,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:35,401 INFO L87 Difference]: Start difference. First operand 1262 states and 4909 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:35,471 INFO L93 Difference]: Finished difference Result 2505 states and 9077 transitions. [2021-06-05 03:40:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:35,475 INFO L225 Difference]: With dead ends: 2505 [2021-06-05 03:40:35,475 INFO L226 Difference]: Without dead ends: 2300 [2021-06-05 03:40:35,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-06-05 03:40:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1246. [2021-06-05 03:40:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.897991967871486) internal successors, (4853), 1245 states have internal predecessors, (4853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4853 transitions. [2021-06-05 03:40:35,507 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4853 transitions. Word has length 25 [2021-06-05 03:40:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:35,507 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4853 transitions. [2021-06-05 03:40:35,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4853 transitions. [2021-06-05 03:40:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:35,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:35,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:35,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-06-05 03:40:35,509 INFO L430 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash -2070510053, now seen corresponding path program 531 times [2021-06-05 03:40:35,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:35,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835555113] [2021-06-05 03:40:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:35,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:35,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835555113] [2021-06-05 03:40:35,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835555113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:35,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:35,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:35,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733791612] [2021-06-05 03:40:35,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:35,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:35,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:35,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:35,585 INFO L87 Difference]: Start difference. First operand 1246 states and 4853 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:35,641 INFO L93 Difference]: Finished difference Result 2469 states and 8959 transitions. [2021-06-05 03:40:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:35,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:35,646 INFO L225 Difference]: With dead ends: 2469 [2021-06-05 03:40:35,646 INFO L226 Difference]: Without dead ends: 2310 [2021-06-05 03:40:35,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-06-05 03:40:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1262. [2021-06-05 03:40:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.88659793814433) internal successors, (4901), 1261 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4901 transitions. [2021-06-05 03:40:35,677 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4901 transitions. Word has length 25 [2021-06-05 03:40:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:35,678 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4901 transitions. [2021-06-05 03:40:35,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4901 transitions. [2021-06-05 03:40:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:35,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:35,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:35,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-06-05 03:40:35,679 INFO L430 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:35,679 INFO L82 PathProgramCache]: Analyzing trace with hash -390013413, now seen corresponding path program 532 times [2021-06-05 03:40:35,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:35,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995672619] [2021-06-05 03:40:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:35,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:35,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995672619] [2021-06-05 03:40:35,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995672619] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:35,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:35,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:35,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854291567] [2021-06-05 03:40:35,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:35,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:35,765 INFO L87 Difference]: Start difference. First operand 1262 states and 4901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:35,836 INFO L93 Difference]: Finished difference Result 2493 states and 9035 transitions. [2021-06-05 03:40:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:35,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:35,840 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 03:40:35,840 INFO L226 Difference]: Without dead ends: 2294 [2021-06-05 03:40:35,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-06-05 03:40:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1246. [2021-06-05 03:40:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.891566265060241) internal successors, (4845), 1245 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4845 transitions. [2021-06-05 03:40:35,871 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4845 transitions. Word has length 25 [2021-06-05 03:40:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:35,871 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4845 transitions. [2021-06-05 03:40:35,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4845 transitions. [2021-06-05 03:40:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:35,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:35,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:35,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-06-05 03:40:35,873 INFO L430 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:35,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:35,873 INFO L82 PathProgramCache]: Analyzing trace with hash -653348099, now seen corresponding path program 533 times [2021-06-05 03:40:35,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:35,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983480685] [2021-06-05 03:40:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:35,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:35,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983480685] [2021-06-05 03:40:35,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983480685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:35,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:35,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:35,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469001799] [2021-06-05 03:40:35,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:35,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:35,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:35,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:35,957 INFO L87 Difference]: Start difference. First operand 1246 states and 4845 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:36,025 INFO L93 Difference]: Finished difference Result 2541 states and 9221 transitions. [2021-06-05 03:40:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:36,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:36,030 INFO L225 Difference]: With dead ends: 2541 [2021-06-05 03:40:36,030 INFO L226 Difference]: Without dead ends: 2352 [2021-06-05 03:40:36,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-05 03:40:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1274. [2021-06-05 03:40:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.875098193244305) internal successors, (4933), 1273 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4933 transitions. [2021-06-05 03:40:36,062 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4933 transitions. Word has length 25 [2021-06-05 03:40:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:36,062 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4933 transitions. [2021-06-05 03:40:36,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4933 transitions. [2021-06-05 03:40:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:36,064 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:36,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:36,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-06-05 03:40:36,064 INFO L430 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:36,064 INFO L82 PathProgramCache]: Analyzing trace with hash -2045492645, now seen corresponding path program 534 times [2021-06-05 03:40:36,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:36,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441369602] [2021-06-05 03:40:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:36,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:36,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441369602] [2021-06-05 03:40:36,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441369602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:36,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:36,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:36,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743036162] [2021-06-05 03:40:36,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:36,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:36,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:36,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:36,139 INFO L87 Difference]: Start difference. First operand 1274 states and 4933 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:36,209 INFO L93 Difference]: Finished difference Result 2535 states and 9176 transitions. [2021-06-05 03:40:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:36,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:36,213 INFO L225 Difference]: With dead ends: 2535 [2021-06-05 03:40:36,213 INFO L226 Difference]: Without dead ends: 2316 [2021-06-05 03:40:36,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-06-05 03:40:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1238. [2021-06-05 03:40:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.89733225545675) internal successors, (4821), 1237 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4821 transitions. [2021-06-05 03:40:36,245 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4821 transitions. Word has length 25 [2021-06-05 03:40:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:36,245 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4821 transitions. [2021-06-05 03:40:36,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4821 transitions. [2021-06-05 03:40:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:36,247 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:36,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:36,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-06-05 03:40:36,247 INFO L430 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1889641977, now seen corresponding path program 535 times [2021-06-05 03:40:36,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:36,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134703581] [2021-06-05 03:40:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:36,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:36,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134703581] [2021-06-05 03:40:36,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134703581] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:36,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:36,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:36,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133104838] [2021-06-05 03:40:36,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:36,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:36,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:36,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:36,340 INFO L87 Difference]: Start difference. First operand 1238 states and 4821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:36,390 INFO L93 Difference]: Finished difference Result 2439 states and 8836 transitions. [2021-06-05 03:40:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:36,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:36,394 INFO L225 Difference]: With dead ends: 2439 [2021-06-05 03:40:36,394 INFO L226 Difference]: Without dead ends: 2280 [2021-06-05 03:40:36,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-06-05 03:40:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1238. [2021-06-05 03:40:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.8843977364591753) internal successors, (4805), 1237 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4805 transitions. [2021-06-05 03:40:36,425 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4805 transitions. Word has length 25 [2021-06-05 03:40:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:36,425 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4805 transitions. [2021-06-05 03:40:36,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4805 transitions. [2021-06-05 03:40:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:36,427 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:36,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:36,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-06-05 03:40:36,427 INFO L430 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash 299707227, now seen corresponding path program 536 times [2021-06-05 03:40:36,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:36,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278048693] [2021-06-05 03:40:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:36,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:36,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278048693] [2021-06-05 03:40:36,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278048693] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:36,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:36,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:36,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224948298] [2021-06-05 03:40:36,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:36,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:36,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:36,529 INFO L87 Difference]: Start difference. First operand 1238 states and 4805 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:36,598 INFO L93 Difference]: Finished difference Result 2469 states and 8929 transitions. [2021-06-05 03:40:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:36,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:36,602 INFO L225 Difference]: With dead ends: 2469 [2021-06-05 03:40:36,602 INFO L226 Difference]: Without dead ends: 2264 [2021-06-05 03:40:36,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-06-05 03:40:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1222. [2021-06-05 03:40:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8894348894348894) internal successors, (4749), 1221 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4749 transitions. [2021-06-05 03:40:36,633 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4749 transitions. Word has length 25 [2021-06-05 03:40:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:36,633 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4749 transitions. [2021-06-05 03:40:36,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4749 transitions. [2021-06-05 03:40:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:36,634 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:36,634 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:36,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-06-05 03:40:36,634 INFO L430 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1035704805, now seen corresponding path program 537 times [2021-06-05 03:40:36,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:36,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904223194] [2021-06-05 03:40:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:36,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:36,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904223194] [2021-06-05 03:40:36,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904223194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:36,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:36,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:36,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929389884] [2021-06-05 03:40:36,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:36,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:36,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:36,719 INFO L87 Difference]: Start difference. First operand 1222 states and 4749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:36,776 INFO L93 Difference]: Finished difference Result 2393 states and 8671 transitions. [2021-06-05 03:40:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:36,780 INFO L225 Difference]: With dead ends: 2393 [2021-06-05 03:40:36,780 INFO L226 Difference]: Without dead ends: 2234 [2021-06-05 03:40:36,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-06-05 03:40:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1238. [2021-06-05 03:40:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.877930476960388) internal successors, (4797), 1237 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4797 transitions. [2021-06-05 03:40:36,811 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4797 transitions. Word has length 25 [2021-06-05 03:40:36,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:36,811 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4797 transitions. [2021-06-05 03:40:36,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4797 transitions. [2021-06-05 03:40:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:36,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:36,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:36,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-06-05 03:40:36,812 INFO L430 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1316990491, now seen corresponding path program 538 times [2021-06-05 03:40:36,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:36,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317236553] [2021-06-05 03:40:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:36,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:36,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317236553] [2021-06-05 03:40:36,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317236553] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:36,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:36,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:36,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834521795] [2021-06-05 03:40:36,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:36,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:36,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:36,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:36,897 INFO L87 Difference]: Start difference. First operand 1238 states and 4797 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:36,967 INFO L93 Difference]: Finished difference Result 2281 states and 8334 transitions. [2021-06-05 03:40:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:36,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:36,972 INFO L225 Difference]: With dead ends: 2281 [2021-06-05 03:40:36,972 INFO L226 Difference]: Without dead ends: 2090 [2021-06-05 03:40:36,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-06-05 03:40:36,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1222. [2021-06-05 03:40:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8828828828828827) internal successors, (4741), 1221 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4741 transitions. [2021-06-05 03:40:37,004 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4741 transitions. Word has length 25 [2021-06-05 03:40:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:37,004 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4741 transitions. [2021-06-05 03:40:37,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4741 transitions. [2021-06-05 03:40:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:37,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:37,006 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:37,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-06-05 03:40:37,006 INFO L430 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash 381457149, now seen corresponding path program 539 times [2021-06-05 03:40:37,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:37,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806784210] [2021-06-05 03:40:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:37,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:37,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806784210] [2021-06-05 03:40:37,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806784210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:37,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:37,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:37,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438918478] [2021-06-05 03:40:37,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:37,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:37,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:37,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:37,100 INFO L87 Difference]: Start difference. First operand 1222 states and 4741 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:37,169 INFO L93 Difference]: Finished difference Result 2431 states and 8808 transitions. [2021-06-05 03:40:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:37,173 INFO L225 Difference]: With dead ends: 2431 [2021-06-05 03:40:37,173 INFO L226 Difference]: Without dead ends: 2242 [2021-06-05 03:40:37,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-06-05 03:40:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1246. [2021-06-05 03:40:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.8690763052208834) internal successors, (4817), 1245 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4817 transitions. [2021-06-05 03:40:37,204 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4817 transitions. Word has length 25 [2021-06-05 03:40:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:37,204 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4817 transitions. [2021-06-05 03:40:37,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4817 transitions. [2021-06-05 03:40:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:37,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:37,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:37,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-06-05 03:40:37,206 INFO L430 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash -359494949, now seen corresponding path program 540 times [2021-06-05 03:40:37,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:37,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511211583] [2021-06-05 03:40:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:37,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:37,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511211583] [2021-06-05 03:40:37,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511211583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:37,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:37,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:37,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265457834] [2021-06-05 03:40:37,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:37,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:37,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:37,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:37,301 INFO L87 Difference]: Start difference. First operand 1246 states and 4817 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:37,371 INFO L93 Difference]: Finished difference Result 2289 states and 8354 transitions. [2021-06-05 03:40:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:37,375 INFO L225 Difference]: With dead ends: 2289 [2021-06-05 03:40:37,376 INFO L226 Difference]: Without dead ends: 2082 [2021-06-05 03:40:37,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-06-05 03:40:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1214. [2021-06-05 03:40:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 3.8887056883759277) internal successors, (4717), 1213 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 4717 transitions. [2021-06-05 03:40:37,405 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 4717 transitions. Word has length 25 [2021-06-05 03:40:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:37,405 INFO L482 AbstractCegarLoop]: Abstraction has 1214 states and 4717 transitions. [2021-06-05 03:40:37,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 4717 transitions. [2021-06-05 03:40:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:37,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:37,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:37,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-06-05 03:40:37,406 INFO L430 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:37,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:37,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1680548325, now seen corresponding path program 541 times [2021-06-05 03:40:37,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:37,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712345419] [2021-06-05 03:40:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:37,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:37,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712345419] [2021-06-05 03:40:37,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712345419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:37,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:37,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:37,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530049397] [2021-06-05 03:40:37,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:37,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:37,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:37,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:37,483 INFO L87 Difference]: Start difference. First operand 1214 states and 4717 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:37,540 INFO L93 Difference]: Finished difference Result 2395 states and 8686 transitions. [2021-06-05 03:40:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:37,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:37,544 INFO L225 Difference]: With dead ends: 2395 [2021-06-05 03:40:37,544 INFO L226 Difference]: Without dead ends: 2236 [2021-06-05 03:40:37,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-06-05 03:40:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1238. [2021-06-05 03:40:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.8811641067097815) internal successors, (4801), 1237 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4801 transitions. [2021-06-05 03:40:37,574 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4801 transitions. Word has length 25 [2021-06-05 03:40:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:37,574 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4801 transitions. [2021-06-05 03:40:37,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4801 transitions. [2021-06-05 03:40:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:37,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:37,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:37,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-06-05 03:40:37,576 INFO L430 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:37,576 INFO L82 PathProgramCache]: Analyzing trace with hash -51685, now seen corresponding path program 542 times [2021-06-05 03:40:37,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:37,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368271797] [2021-06-05 03:40:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:37,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:37,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368271797] [2021-06-05 03:40:37,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368271797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:37,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:37,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:37,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260403712] [2021-06-05 03:40:37,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:37,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:37,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:37,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:37,652 INFO L87 Difference]: Start difference. First operand 1238 states and 4801 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:37,721 INFO L93 Difference]: Finished difference Result 2419 states and 8762 transitions. [2021-06-05 03:40:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:37,726 INFO L225 Difference]: With dead ends: 2419 [2021-06-05 03:40:37,726 INFO L226 Difference]: Without dead ends: 2220 [2021-06-05 03:40:37,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-06-05 03:40:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1222. [2021-06-05 03:40:37,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8861588861588863) internal successors, (4745), 1221 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4745 transitions. [2021-06-05 03:40:37,755 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4745 transitions. Word has length 25 [2021-06-05 03:40:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:37,755 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4745 transitions. [2021-06-05 03:40:37,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4745 transitions. [2021-06-05 03:40:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:37,757 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:37,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:37,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-06-05 03:40:37,757 INFO L430 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:37,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:37,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1767622009, now seen corresponding path program 543 times [2021-06-05 03:40:37,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:37,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538290999] [2021-06-05 03:40:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:37,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:37,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538290999] [2021-06-05 03:40:37,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538290999] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:37,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:37,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:37,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927056888] [2021-06-05 03:40:37,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:37,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:37,836 INFO L87 Difference]: Start difference. First operand 1222 states and 4745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:37,882 INFO L93 Difference]: Finished difference Result 2339 states and 8474 transitions. [2021-06-05 03:40:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:37,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:37,887 INFO L225 Difference]: With dead ends: 2339 [2021-06-05 03:40:37,887 INFO L226 Difference]: Without dead ends: 2180 [2021-06-05 03:40:37,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-06-05 03:40:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1238. [2021-06-05 03:40:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.8746968472109944) internal successors, (4793), 1237 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4793 transitions. [2021-06-05 03:40:37,916 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4793 transitions. Word has length 25 [2021-06-05 03:40:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:37,916 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4793 transitions. [2021-06-05 03:40:37,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4793 transitions. [2021-06-05 03:40:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:37,918 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:37,918 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:37,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-06-05 03:40:37,918 INFO L430 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:37,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1885006309, now seen corresponding path program 544 times [2021-06-05 03:40:37,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:37,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899566771] [2021-06-05 03:40:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:38,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:38,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899566771] [2021-06-05 03:40:38,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899566771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:38,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:38,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:38,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508333443] [2021-06-05 03:40:38,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:38,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:38,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:38,001 INFO L87 Difference]: Start difference. First operand 1238 states and 4793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:38,060 INFO L93 Difference]: Finished difference Result 2227 states and 8137 transitions. [2021-06-05 03:40:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:38,064 INFO L225 Difference]: With dead ends: 2227 [2021-06-05 03:40:38,065 INFO L226 Difference]: Without dead ends: 2036 [2021-06-05 03:40:38,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-06-05 03:40:38,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1222. [2021-06-05 03:40:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8796068796068797) internal successors, (4737), 1221 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4737 transitions. [2021-06-05 03:40:38,093 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4737 transitions. Word has length 25 [2021-06-05 03:40:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:38,093 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4737 transitions. [2021-06-05 03:40:38,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4737 transitions. [2021-06-05 03:40:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:38,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:38,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:38,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-06-05 03:40:38,095 INFO L430 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:38,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:38,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1787330075, now seen corresponding path program 545 times [2021-06-05 03:40:38,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:38,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824356200] [2021-06-05 03:40:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:38,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:38,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824356200] [2021-06-05 03:40:38,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824356200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:38,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:38,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:38,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870608783] [2021-06-05 03:40:38,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:38,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:38,171 INFO L87 Difference]: Start difference. First operand 1222 states and 4737 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:38,236 INFO L93 Difference]: Finished difference Result 2243 states and 8209 transitions. [2021-06-05 03:40:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:38,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:38,240 INFO L225 Difference]: With dead ends: 2243 [2021-06-05 03:40:38,240 INFO L226 Difference]: Without dead ends: 2060 [2021-06-05 03:40:38,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-06-05 03:40:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1246. [2021-06-05 03:40:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.865863453815261) internal successors, (4813), 1245 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4813 transitions. [2021-06-05 03:40:38,269 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4813 transitions. Word has length 25 [2021-06-05 03:40:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:38,269 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4813 transitions. [2021-06-05 03:40:38,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4813 transitions. [2021-06-05 03:40:38,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:38,270 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:38,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:38,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-06-05 03:40:38,271 INFO L430 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash -256006919, now seen corresponding path program 546 times [2021-06-05 03:40:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:38,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721804043] [2021-06-05 03:40:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:38,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:38,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721804043] [2021-06-05 03:40:38,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721804043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:38,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:38,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:38,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030667213] [2021-06-05 03:40:38,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:38,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:38,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:38,348 INFO L87 Difference]: Start difference. First operand 1246 states and 4813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:38,406 INFO L93 Difference]: Finished difference Result 2059 states and 7596 transitions. [2021-06-05 03:40:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:38,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:38,410 INFO L225 Difference]: With dead ends: 2059 [2021-06-05 03:40:38,410 INFO L226 Difference]: Without dead ends: 1852 [2021-06-05 03:40:38,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2021-06-05 03:40:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1214. [2021-06-05 03:40:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 3.8854080791426218) internal successors, (4713), 1213 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 4713 transitions. [2021-06-05 03:40:38,438 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 4713 transitions. Word has length 25 [2021-06-05 03:40:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:38,438 INFO L482 AbstractCegarLoop]: Abstraction has 1214 states and 4713 transitions. [2021-06-05 03:40:38,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 4713 transitions. [2021-06-05 03:40:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:38,440 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:38,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:38,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-06-05 03:40:38,440 INFO L430 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:38,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:38,440 INFO L82 PathProgramCache]: Analyzing trace with hash -956444035, now seen corresponding path program 547 times [2021-06-05 03:40:38,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:38,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513474005] [2021-06-05 03:40:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:38,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:38,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513474005] [2021-06-05 03:40:38,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513474005] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:38,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:38,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:38,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902862088] [2021-06-05 03:40:38,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:38,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:38,529 INFO L87 Difference]: Start difference. First operand 1214 states and 4713 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:38,587 INFO L93 Difference]: Finished difference Result 2479 states and 9008 transitions. [2021-06-05 03:40:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:38,591 INFO L225 Difference]: With dead ends: 2479 [2021-06-05 03:40:38,591 INFO L226 Difference]: Without dead ends: 2290 [2021-06-05 03:40:38,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2021-06-05 03:40:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1254. [2021-06-05 03:40:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1253 states have (on average 3.8762968874700716) internal successors, (4857), 1253 states have internal predecessors, (4857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4857 transitions. [2021-06-05 03:40:38,622 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4857 transitions. Word has length 25 [2021-06-05 03:40:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:38,622 INFO L482 AbstractCegarLoop]: Abstraction has 1254 states and 4857 transitions. [2021-06-05 03:40:38,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4857 transitions. [2021-06-05 03:40:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:38,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:38,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:38,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-06-05 03:40:38,624 INFO L430 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1946378715, now seen corresponding path program 548 times [2021-06-05 03:40:38,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:38,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207511539] [2021-06-05 03:40:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:38,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:38,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207511539] [2021-06-05 03:40:38,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207511539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:38,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:38,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:38,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381031709] [2021-06-05 03:40:38,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:38,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:38,699 INFO L87 Difference]: Start difference. First operand 1254 states and 4857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:38,758 INFO L93 Difference]: Finished difference Result 2473 states and 8963 transitions. [2021-06-05 03:40:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:38,762 INFO L225 Difference]: With dead ends: 2473 [2021-06-05 03:40:38,762 INFO L226 Difference]: Without dead ends: 2262 [2021-06-05 03:40:38,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-06-05 03:40:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1226. [2021-06-05 03:40:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.883265306122449) internal successors, (4757), 1225 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4757 transitions. [2021-06-05 03:40:38,793 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4757 transitions. Word has length 25 [2021-06-05 03:40:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:38,793 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4757 transitions. [2021-06-05 03:40:38,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4757 transitions. [2021-06-05 03:40:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:38,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:38,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:38,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-06-05 03:40:38,794 INFO L430 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1803240997, now seen corresponding path program 549 times [2021-06-05 03:40:38,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:38,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845468169] [2021-06-05 03:40:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:38,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:38,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845468169] [2021-06-05 03:40:38,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845468169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:38,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:38,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:38,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57271211] [2021-06-05 03:40:38,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:38,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:38,881 INFO L87 Difference]: Start difference. First operand 1226 states and 4757 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:38,939 INFO L93 Difference]: Finished difference Result 2381 states and 8631 transitions. [2021-06-05 03:40:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:38,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:38,943 INFO L225 Difference]: With dead ends: 2381 [2021-06-05 03:40:38,943 INFO L226 Difference]: Without dead ends: 2192 [2021-06-05 03:40:38,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-06-05 03:40:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1250. [2021-06-05 03:40:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.8694955964771816) internal successors, (4833), 1249 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4833 transitions. [2021-06-05 03:40:38,973 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4833 transitions. Word has length 25 [2021-06-05 03:40:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:38,973 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4833 transitions. [2021-06-05 03:40:38,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4833 transitions. [2021-06-05 03:40:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:38,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:38,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:38,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-06-05 03:40:38,975 INFO L430 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:38,975 INFO L82 PathProgramCache]: Analyzing trace with hash 40417883, now seen corresponding path program 550 times [2021-06-05 03:40:38,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:38,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533777091] [2021-06-05 03:40:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:39,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:39,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533777091] [2021-06-05 03:40:39,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533777091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:39,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:39,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:39,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806914220] [2021-06-05 03:40:39,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:39,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:39,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:39,083 INFO L87 Difference]: Start difference. First operand 1250 states and 4833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:39,145 INFO L93 Difference]: Finished difference Result 2239 states and 8177 transitions. [2021-06-05 03:40:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:39,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:39,149 INFO L225 Difference]: With dead ends: 2239 [2021-06-05 03:40:39,149 INFO L226 Difference]: Without dead ends: 2040 [2021-06-05 03:40:39,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-06-05 03:40:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1226. [2021-06-05 03:40:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.873469387755102) internal successors, (4745), 1225 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4745 transitions. [2021-06-05 03:40:39,178 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4745 transitions. Word has length 25 [2021-06-05 03:40:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:39,178 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4745 transitions. [2021-06-05 03:40:39,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4745 transitions. [2021-06-05 03:40:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:39,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:39,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:39,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-06-05 03:40:39,180 INFO L430 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1438983623, now seen corresponding path program 551 times [2021-06-05 03:40:39,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:39,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425862627] [2021-06-05 03:40:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:39,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:39,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425862627] [2021-06-05 03:40:39,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425862627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:39,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:39,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:39,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923093252] [2021-06-05 03:40:39,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:39,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:39,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:39,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:39,255 INFO L87 Difference]: Start difference. First operand 1226 states and 4745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:39,311 INFO L93 Difference]: Finished difference Result 2247 states and 8217 transitions. [2021-06-05 03:40:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:39,315 INFO L225 Difference]: With dead ends: 2247 [2021-06-05 03:40:39,315 INFO L226 Difference]: Without dead ends: 2064 [2021-06-05 03:40:39,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2021-06-05 03:40:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1250. [2021-06-05 03:40:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.8598879103282626) internal successors, (4821), 1249 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4821 transitions. [2021-06-05 03:40:39,344 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4821 transitions. Word has length 25 [2021-06-05 03:40:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:39,344 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4821 transitions. [2021-06-05 03:40:39,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4821 transitions. [2021-06-05 03:40:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:39,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:39,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:39,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-06-05 03:40:39,346 INFO L430 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -357920997, now seen corresponding path program 552 times [2021-06-05 03:40:39,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:39,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981857115] [2021-06-05 03:40:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:39,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:39,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981857115] [2021-06-05 03:40:39,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981857115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:39,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:39,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:39,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125200151] [2021-06-05 03:40:39,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:39,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:39,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:39,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:39,422 INFO L87 Difference]: Start difference. First operand 1250 states and 4821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:39,479 INFO L93 Difference]: Finished difference Result 2063 states and 7604 transitions. [2021-06-05 03:40:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:39,483 INFO L225 Difference]: With dead ends: 2063 [2021-06-05 03:40:39,483 INFO L226 Difference]: Without dead ends: 1848 [2021-06-05 03:40:39,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-06-05 03:40:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1210. [2021-06-05 03:40:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.889991728701406) internal successors, (4703), 1209 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4703 transitions. [2021-06-05 03:40:39,510 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4703 transitions. Word has length 25 [2021-06-05 03:40:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:39,511 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4703 transitions. [2021-06-05 03:40:39,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4703 transitions. [2021-06-05 03:40:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:39,512 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:39,512 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:39,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-06-05 03:40:39,512 INFO L430 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash -302743043, now seen corresponding path program 553 times [2021-06-05 03:40:39,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:39,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22181532] [2021-06-05 03:40:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:39,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:39,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22181532] [2021-06-05 03:40:39,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22181532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:39,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:39,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:39,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133814915] [2021-06-05 03:40:39,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:39,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:39,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:39,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:39,599 INFO L87 Difference]: Start difference. First operand 1210 states and 4703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:39,648 INFO L93 Difference]: Finished difference Result 2385 states and 8635 transitions. [2021-06-05 03:40:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:39,653 INFO L225 Difference]: With dead ends: 2385 [2021-06-05 03:40:39,653 INFO L226 Difference]: Without dead ends: 2226 [2021-06-05 03:40:39,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-06-05 03:40:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1226. [2021-06-05 03:40:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.8783673469387754) internal successors, (4751), 1225 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4751 transitions. [2021-06-05 03:40:39,683 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4751 transitions. Word has length 25 [2021-06-05 03:40:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:39,683 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4751 transitions. [2021-06-05 03:40:39,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4751 transitions. [2021-06-05 03:40:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:39,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:39,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:39,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-06-05 03:40:39,685 INFO L430 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:39,685 INFO L82 PathProgramCache]: Analyzing trace with hash 705554941, now seen corresponding path program 554 times [2021-06-05 03:40:39,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:39,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259286647] [2021-06-05 03:40:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:39,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:39,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259286647] [2021-06-05 03:40:39,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259286647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:39,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:39,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:39,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723241443] [2021-06-05 03:40:39,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:39,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:39,772 INFO L87 Difference]: Start difference. First operand 1226 states and 4751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:39,831 INFO L93 Difference]: Finished difference Result 2413 states and 8723 transitions. [2021-06-05 03:40:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:39,835 INFO L225 Difference]: With dead ends: 2413 [2021-06-05 03:40:39,835 INFO L226 Difference]: Without dead ends: 2210 [2021-06-05 03:40:39,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2021-06-05 03:40:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1210. [2021-06-05 03:40:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8833746898263026) internal successors, (4695), 1209 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4695 transitions. [2021-06-05 03:40:39,864 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4695 transitions. Word has length 25 [2021-06-05 03:40:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:39,864 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4695 transitions. [2021-06-05 03:40:39,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4695 transitions. [2021-06-05 03:40:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:39,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:39,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:39,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-06-05 03:40:39,866 INFO L430 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:39,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:39,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1149540005, now seen corresponding path program 555 times [2021-06-05 03:40:39,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:39,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621449557] [2021-06-05 03:40:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:39,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:39,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621449557] [2021-06-05 03:40:39,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621449557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:39,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:39,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:39,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462873253] [2021-06-05 03:40:39,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:39,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:39,944 INFO L87 Difference]: Start difference. First operand 1210 states and 4695 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:39,988 INFO L93 Difference]: Finished difference Result 2381 states and 8615 transitions. [2021-06-05 03:40:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:39,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:39,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:39,993 INFO L225 Difference]: With dead ends: 2381 [2021-06-05 03:40:39,993 INFO L226 Difference]: Without dead ends: 2222 [2021-06-05 03:40:39,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-06-05 03:40:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1226. [2021-06-05 03:40:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.8718367346938773) internal successors, (4743), 1225 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4743 transitions. [2021-06-05 03:40:40,023 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4743 transitions. Word has length 25 [2021-06-05 03:40:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:40,023 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4743 transitions. [2021-06-05 03:40:40,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4743 transitions. [2021-06-05 03:40:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:40,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:40,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:40,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-06-05 03:40:40,024 INFO L430 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1179399683, now seen corresponding path program 556 times [2021-06-05 03:40:40,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:40,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60212381] [2021-06-05 03:40:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:40,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:40,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60212381] [2021-06-05 03:40:40,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60212381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:40,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:40,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:40,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439286268] [2021-06-05 03:40:40,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:40,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:40,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:40,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:40,100 INFO L87 Difference]: Start difference. First operand 1226 states and 4743 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:40,161 INFO L93 Difference]: Finished difference Result 2405 states and 8691 transitions. [2021-06-05 03:40:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:40,165 INFO L225 Difference]: With dead ends: 2405 [2021-06-05 03:40:40,165 INFO L226 Difference]: Without dead ends: 2206 [2021-06-05 03:40:40,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:40,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-06-05 03:40:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1210. [2021-06-05 03:40:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.876757650951199) internal successors, (4687), 1209 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4687 transitions. [2021-06-05 03:40:40,195 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4687 transitions. Word has length 25 [2021-06-05 03:40:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:40,195 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4687 transitions. [2021-06-05 03:40:40,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4687 transitions. [2021-06-05 03:40:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:40,197 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:40,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:40,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-06-05 03:40:40,197 INFO L430 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:40,197 INFO L82 PathProgramCache]: Analyzing trace with hash 755122685, now seen corresponding path program 557 times [2021-06-05 03:40:40,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:40,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595315789] [2021-06-05 03:40:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:40,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:40,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595315789] [2021-06-05 03:40:40,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595315789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:40,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:40,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:40,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843552492] [2021-06-05 03:40:40,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:40,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:40,274 INFO L87 Difference]: Start difference. First operand 1210 states and 4687 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:40,332 INFO L93 Difference]: Finished difference Result 2449 states and 8867 transitions. [2021-06-05 03:40:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:40,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:40,336 INFO L225 Difference]: With dead ends: 2449 [2021-06-05 03:40:40,336 INFO L226 Difference]: Without dead ends: 2262 [2021-06-05 03:40:40,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-06-05 03:40:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1238. [2021-06-05 03:40:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.860145513338723) internal successors, (4775), 1237 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4775 transitions. [2021-06-05 03:40:40,366 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4775 transitions. Word has length 25 [2021-06-05 03:40:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:40,366 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4775 transitions. [2021-06-05 03:40:40,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4775 transitions. [2021-06-05 03:40:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:40,367 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:40,368 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:40,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-06-05 03:40:40,368 INFO L430 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:40,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1288214309, now seen corresponding path program 558 times [2021-06-05 03:40:40,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:40,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397708444] [2021-06-05 03:40:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:40,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:40,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397708444] [2021-06-05 03:40:40,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397708444] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:40,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:40,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:40,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642598454] [2021-06-05 03:40:40,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:40,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:40,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:40,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:40,444 INFO L87 Difference]: Start difference. First operand 1238 states and 4775 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:40,505 INFO L93 Difference]: Finished difference Result 2445 states and 8827 transitions. [2021-06-05 03:40:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:40,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:40,509 INFO L225 Difference]: With dead ends: 2445 [2021-06-05 03:40:40,509 INFO L226 Difference]: Without dead ends: 2226 [2021-06-05 03:40:40,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-06-05 03:40:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1202. [2021-06-05 03:40:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.8825978351373855) internal successors, (4663), 1201 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4663 transitions. [2021-06-05 03:40:40,538 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4663 transitions. Word has length 25 [2021-06-05 03:40:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:40,538 INFO L482 AbstractCegarLoop]: Abstraction has 1202 states and 4663 transitions. [2021-06-05 03:40:40,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4663 transitions. [2021-06-05 03:40:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:40,540 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:40,540 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:40,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-06-05 03:40:40,540 INFO L430 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:40,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1969162715, now seen corresponding path program 559 times [2021-06-05 03:40:40,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:40,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154696723] [2021-06-05 03:40:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:40,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:40,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154696723] [2021-06-05 03:40:40,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154696723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:40,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:40,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:40,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114042890] [2021-06-05 03:40:40,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:40,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:40,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:40,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:40,626 INFO L87 Difference]: Start difference. First operand 1202 states and 4663 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:40,672 INFO L93 Difference]: Finished difference Result 2349 states and 8487 transitions. [2021-06-05 03:40:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:40,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:40,676 INFO L225 Difference]: With dead ends: 2349 [2021-06-05 03:40:40,676 INFO L226 Difference]: Without dead ends: 2190 [2021-06-05 03:40:40,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2021-06-05 03:40:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1202. [2021-06-05 03:40:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.869275603663614) internal successors, (4647), 1201 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4647 transitions. [2021-06-05 03:40:40,705 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4647 transitions. Word has length 25 [2021-06-05 03:40:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:40,705 INFO L482 AbstractCegarLoop]: Abstraction has 1202 states and 4647 transitions. [2021-06-05 03:40:40,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4647 transitions. [2021-06-05 03:40:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:40,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:40,707 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:40,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-06-05 03:40:40,707 INFO L430 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:40,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1317506597, now seen corresponding path program 560 times [2021-06-05 03:40:40,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:40,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110431113] [2021-06-05 03:40:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:40,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:40,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110431113] [2021-06-05 03:40:40,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110431113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:40,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:40,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:40,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422920084] [2021-06-05 03:40:40,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:40,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:40,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:40,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:40,793 INFO L87 Difference]: Start difference. First operand 1202 states and 4647 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:40,854 INFO L93 Difference]: Finished difference Result 2377 states and 8575 transitions. [2021-06-05 03:40:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:40,858 INFO L225 Difference]: With dead ends: 2377 [2021-06-05 03:40:40,858 INFO L226 Difference]: Without dead ends: 2174 [2021-06-05 03:40:40,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2021-06-05 03:40:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1186. [2021-06-05 03:40:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 3.8742616033755275) internal successors, (4591), 1185 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 4591 transitions. [2021-06-05 03:40:40,886 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 4591 transitions. Word has length 25 [2021-06-05 03:40:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:40,886 INFO L482 AbstractCegarLoop]: Abstraction has 1186 states and 4591 transitions. [2021-06-05 03:40:40,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 4591 transitions. [2021-06-05 03:40:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:40,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:40,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:40,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-06-05 03:40:40,888 INFO L430 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1173135835, now seen corresponding path program 561 times [2021-06-05 03:40:40,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:40,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966932444] [2021-06-05 03:40:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:40,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:40,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966932444] [2021-06-05 03:40:40,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966932444] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:40,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:40,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:40,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575018276] [2021-06-05 03:40:40,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:40,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:40,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:40,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:40,966 INFO L87 Difference]: Start difference. First operand 1186 states and 4591 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:41,012 INFO L93 Difference]: Finished difference Result 2305 states and 8327 transitions. [2021-06-05 03:40:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:41,016 INFO L225 Difference]: With dead ends: 2305 [2021-06-05 03:40:41,016 INFO L226 Difference]: Without dead ends: 2146 [2021-06-05 03:40:41,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-06-05 03:40:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1202. [2021-06-05 03:40:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.8626144879267277) internal successors, (4639), 1201 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4639 transitions. [2021-06-05 03:40:41,044 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4639 transitions. Word has length 25 [2021-06-05 03:40:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:41,044 INFO L482 AbstractCegarLoop]: Abstraction has 1202 states and 4639 transitions. [2021-06-05 03:40:41,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4639 transitions. [2021-06-05 03:40:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:41,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:41,046 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:41,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-06-05 03:40:41,046 INFO L430 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:41,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:41,046 INFO L82 PathProgramCache]: Analyzing trace with hash 527604221, now seen corresponding path program 562 times [2021-06-05 03:40:41,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:41,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497827398] [2021-06-05 03:40:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:41,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:41,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497827398] [2021-06-05 03:40:41,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497827398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:41,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:41,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:41,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371196744] [2021-06-05 03:40:41,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:41,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:41,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:41,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:41,123 INFO L87 Difference]: Start difference. First operand 1202 states and 4639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:41,184 INFO L93 Difference]: Finished difference Result 2193 states and 7990 transitions. [2021-06-05 03:40:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:41,188 INFO L225 Difference]: With dead ends: 2193 [2021-06-05 03:40:41,188 INFO L226 Difference]: Without dead ends: 2002 [2021-06-05 03:40:41,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2021-06-05 03:40:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1186. [2021-06-05 03:40:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 3.8675105485232066) internal successors, (4583), 1185 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 4583 transitions. [2021-06-05 03:40:41,215 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 4583 transitions. Word has length 25 [2021-06-05 03:40:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:41,215 INFO L482 AbstractCegarLoop]: Abstraction has 1186 states and 4583 transitions. [2021-06-05 03:40:41,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 4583 transitions. [2021-06-05 03:40:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:41,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:41,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:41,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-06-05 03:40:41,217 INFO L430 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1789927933, now seen corresponding path program 563 times [2021-06-05 03:40:41,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:41,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199438826] [2021-06-05 03:40:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:41,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:41,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199438826] [2021-06-05 03:40:41,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199438826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:41,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:41,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:41,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843302100] [2021-06-05 03:40:41,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:41,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:41,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:41,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:41,294 INFO L87 Difference]: Start difference. First operand 1186 states and 4583 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:41,353 INFO L93 Difference]: Finished difference Result 2341 states and 8459 transitions. [2021-06-05 03:40:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:41,358 INFO L225 Difference]: With dead ends: 2341 [2021-06-05 03:40:41,358 INFO L226 Difference]: Without dead ends: 2154 [2021-06-05 03:40:41,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-06-05 03:40:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1210. [2021-06-05 03:40:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8535980148883375) internal successors, (4659), 1209 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4659 transitions. [2021-06-05 03:40:41,387 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4659 transitions. Word has length 25 [2021-06-05 03:40:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:41,387 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4659 transitions. [2021-06-05 03:40:41,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4659 transitions. [2021-06-05 03:40:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:41,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:41,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:41,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-06-05 03:40:41,389 INFO L430 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:41,389 INFO L82 PathProgramCache]: Analyzing trace with hash 397783387, now seen corresponding path program 564 times [2021-06-05 03:40:41,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:41,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495244703] [2021-06-05 03:40:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:41,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:41,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495244703] [2021-06-05 03:40:41,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495244703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:41,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:41,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:41,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242653100] [2021-06-05 03:40:41,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:41,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:41,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:41,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:41,466 INFO L87 Difference]: Start difference. First operand 1210 states and 4659 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:41,538 INFO L93 Difference]: Finished difference Result 2201 states and 8010 transitions. [2021-06-05 03:40:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:41,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:41,542 INFO L225 Difference]: With dead ends: 2201 [2021-06-05 03:40:41,542 INFO L226 Difference]: Without dead ends: 1994 [2021-06-05 03:40:41,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-06-05 03:40:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1178. [2021-06-05 03:40:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 3.873406966864911) internal successors, (4559), 1177 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 4559 transitions. [2021-06-05 03:40:41,569 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 4559 transitions. Word has length 25 [2021-06-05 03:40:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:41,569 INFO L482 AbstractCegarLoop]: Abstraction has 1178 states and 4559 transitions. [2021-06-05 03:40:41,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 4559 transitions. [2021-06-05 03:40:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:41,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:41,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:41,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-06-05 03:40:41,571 INFO L430 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:41,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1112414649, now seen corresponding path program 565 times [2021-06-05 03:40:41,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:41,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937013540] [2021-06-05 03:40:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:41,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:41,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937013540] [2021-06-05 03:40:41,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937013540] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:41,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:41,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:41,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435396025] [2021-06-05 03:40:41,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:41,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:41,648 INFO L87 Difference]: Start difference. First operand 1178 states and 4559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:41,694 INFO L93 Difference]: Finished difference Result 2285 states and 8247 transitions. [2021-06-05 03:40:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:41,698 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 03:40:41,698 INFO L226 Difference]: Without dead ends: 2126 [2021-06-05 03:40:41,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-06-05 03:40:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1178. [2021-06-05 03:40:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 3.8598130841121496) internal successors, (4543), 1177 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 4543 transitions. [2021-06-05 03:40:41,726 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 4543 transitions. Word has length 25 [2021-06-05 03:40:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:41,726 INFO L482 AbstractCegarLoop]: Abstraction has 1178 states and 4543 transitions. [2021-06-05 03:40:41,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 4543 transitions. [2021-06-05 03:40:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:41,727 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:41,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:41,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-06-05 03:40:41,728 INFO L430 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1082554971, now seen corresponding path program 566 times [2021-06-05 03:40:41,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:41,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443490678] [2021-06-05 03:40:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:41,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:41,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443490678] [2021-06-05 03:40:41,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443490678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:41,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:41,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:41,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805003518] [2021-06-05 03:40:41,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:41,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:41,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:41,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:41,805 INFO L87 Difference]: Start difference. First operand 1178 states and 4543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:41,865 INFO L93 Difference]: Finished difference Result 2309 states and 8323 transitions. [2021-06-05 03:40:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:41,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:41,869 INFO L225 Difference]: With dead ends: 2309 [2021-06-05 03:40:41,869 INFO L226 Difference]: Without dead ends: 2110 [2021-06-05 03:40:41,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2021-06-05 03:40:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1162. [2021-06-05 03:40:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.8647717484926787) internal successors, (4487), 1161 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4487 transitions. [2021-06-05 03:40:41,897 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4487 transitions. Word has length 25 [2021-06-05 03:40:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:41,897 INFO L482 AbstractCegarLoop]: Abstraction has 1162 states and 4487 transitions. [2021-06-05 03:40:41,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4487 transitions. [2021-06-05 03:40:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:41,899 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:41,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:41,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-06-05 03:40:41,899 INFO L430 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash 631512603, now seen corresponding path program 567 times [2021-06-05 03:40:41,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:41,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539193844] [2021-06-05 03:40:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:41,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:41,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539193844] [2021-06-05 03:40:41,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539193844] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:41,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:41,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:41,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712466319] [2021-06-05 03:40:41,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:41,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:41,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:41,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:41,976 INFO L87 Difference]: Start difference. First operand 1162 states and 4487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:42,026 INFO L93 Difference]: Finished difference Result 2229 states and 8035 transitions. [2021-06-05 03:40:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:42,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:42,030 INFO L225 Difference]: With dead ends: 2229 [2021-06-05 03:40:42,030 INFO L226 Difference]: Without dead ends: 2070 [2021-06-05 03:40:42,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-06-05 03:40:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1130. [2021-06-05 03:40:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.8609388839681134) internal successors, (4359), 1129 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 4359 transitions. [2021-06-05 03:40:42,057 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 4359 transitions. Word has length 25 [2021-06-05 03:40:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:42,057 INFO L482 AbstractCegarLoop]: Abstraction has 1130 states and 4359 transitions. [2021-06-05 03:40:42,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 4359 transitions. [2021-06-05 03:40:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:42,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:42,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:42,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-06-05 03:40:42,058 INFO L430 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1495457317, now seen corresponding path program 568 times [2021-06-05 03:40:42,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:42,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21888224] [2021-06-05 03:40:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:42,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:42,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21888224] [2021-06-05 03:40:42,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21888224] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:42,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:42,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:42,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672202221] [2021-06-05 03:40:42,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:42,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:42,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:42,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:42,136 INFO L87 Difference]: Start difference. First operand 1130 states and 4359 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:42,195 INFO L93 Difference]: Finished difference Result 2117 states and 7698 transitions. [2021-06-05 03:40:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:42,199 INFO L225 Difference]: With dead ends: 2117 [2021-06-05 03:40:42,199 INFO L226 Difference]: Without dead ends: 1926 [2021-06-05 03:40:42,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-06-05 03:40:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1114. [2021-06-05 03:40:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.866127583108715) internal successors, (4303), 1113 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4303 transitions. [2021-06-05 03:40:42,227 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4303 transitions. Word has length 25 [2021-06-05 03:40:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:42,227 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 4303 transitions. [2021-06-05 03:40:42,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4303 transitions. [2021-06-05 03:40:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:42,229 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:42,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:42,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-06-05 03:40:42,229 INFO L430 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:42,229 INFO L82 PathProgramCache]: Analyzing trace with hash -798035459, now seen corresponding path program 569 times [2021-06-05 03:40:42,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:42,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222647902] [2021-06-05 03:40:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:42,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:42,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222647902] [2021-06-05 03:40:42,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222647902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:42,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:42,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:42,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378131588] [2021-06-05 03:40:42,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:42,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:42,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:42,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:42,309 INFO L87 Difference]: Start difference. First operand 1114 states and 4303 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:42,367 INFO L93 Difference]: Finished difference Result 2133 states and 7770 transitions. [2021-06-05 03:40:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:42,371 INFO L225 Difference]: With dead ends: 2133 [2021-06-05 03:40:42,371 INFO L226 Difference]: Without dead ends: 1950 [2021-06-05 03:40:42,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2021-06-05 03:40:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1138. [2021-06-05 03:40:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 3.851363236587511) internal successors, (4379), 1137 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 4379 transitions. [2021-06-05 03:40:42,398 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 4379 transitions. Word has length 25 [2021-06-05 03:40:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:42,398 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 4379 transitions. [2021-06-05 03:40:42,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 4379 transitions. [2021-06-05 03:40:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:42,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:42,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:42,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-06-05 03:40:42,400 INFO L430 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1453594843, now seen corresponding path program 570 times [2021-06-05 03:40:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:42,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471043269] [2021-06-05 03:40:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:42,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:42,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471043269] [2021-06-05 03:40:42,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471043269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:42,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:42,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:42,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066970917] [2021-06-05 03:40:42,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:42,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:42,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:42,477 INFO L87 Difference]: Start difference. First operand 1138 states and 4379 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:42,534 INFO L93 Difference]: Finished difference Result 1949 states and 7157 transitions. [2021-06-05 03:40:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:42,538 INFO L225 Difference]: With dead ends: 1949 [2021-06-05 03:40:42,538 INFO L226 Difference]: Without dead ends: 1742 [2021-06-05 03:40:42,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-06-05 03:40:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1106. [2021-06-05 03:40:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.872398190045249) internal successors, (4279), 1105 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 4279 transitions. [2021-06-05 03:40:42,564 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 4279 transitions. Word has length 25 [2021-06-05 03:40:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:42,564 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 4279 transitions. [2021-06-05 03:40:42,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 4279 transitions. [2021-06-05 03:40:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:42,566 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:42,566 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:42,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-06-05 03:40:42,566 INFO L430 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash 442075645, now seen corresponding path program 571 times [2021-06-05 03:40:42,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:42,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755471813] [2021-06-05 03:40:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:42,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:42,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755471813] [2021-06-05 03:40:42,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755471813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:42,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:42,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:42,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395841454] [2021-06-05 03:40:42,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:42,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:42,643 INFO L87 Difference]: Start difference. First operand 1106 states and 4279 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:42,701 INFO L93 Difference]: Finished difference Result 2181 states and 7970 transitions. [2021-06-05 03:40:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:42,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:42,705 INFO L225 Difference]: With dead ends: 2181 [2021-06-05 03:40:42,705 INFO L226 Difference]: Without dead ends: 1994 [2021-06-05 03:40:42,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-06-05 03:40:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1146. [2021-06-05 03:40:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 3.862882096069869) internal successors, (4423), 1145 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4423 transitions. [2021-06-05 03:40:42,731 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4423 transitions. Word has length 25 [2021-06-05 03:40:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:42,731 INFO L482 AbstractCegarLoop]: Abstraction has 1146 states and 4423 transitions. [2021-06-05 03:40:42,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4423 transitions. [2021-06-05 03:40:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:42,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:42,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:42,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-06-05 03:40:42,733 INFO L430 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1601261349, now seen corresponding path program 572 times [2021-06-05 03:40:42,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:42,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150743630] [2021-06-05 03:40:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:42,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:42,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150743630] [2021-06-05 03:40:42,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150743630] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:42,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:42,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:42,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855330802] [2021-06-05 03:40:42,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:42,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:42,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:42,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:42,810 INFO L87 Difference]: Start difference. First operand 1146 states and 4423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:42,868 INFO L93 Difference]: Finished difference Result 2177 states and 7930 transitions. [2021-06-05 03:40:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:42,872 INFO L225 Difference]: With dead ends: 2177 [2021-06-05 03:40:42,872 INFO L226 Difference]: Without dead ends: 1966 [2021-06-05 03:40:42,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2021-06-05 03:40:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1118. [2021-06-05 03:40:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 3.8701880035810206) internal successors, (4323), 1117 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 4323 transitions. [2021-06-05 03:40:42,897 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 4323 transitions. Word has length 25 [2021-06-05 03:40:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:42,897 INFO L482 AbstractCegarLoop]: Abstraction has 1118 states and 4323 transitions. [2021-06-05 03:40:42,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 4323 transitions. [2021-06-05 03:40:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:42,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:42,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:42,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-06-05 03:40:42,898 INFO L430 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -404721317, now seen corresponding path program 573 times [2021-06-05 03:40:42,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:42,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119486329] [2021-06-05 03:40:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:42,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:42,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119486329] [2021-06-05 03:40:42,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119486329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:42,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:42,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:42,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221007218] [2021-06-05 03:40:42,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:42,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:42,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:42,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:42,974 INFO L87 Difference]: Start difference. First operand 1118 states and 4323 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:43,038 INFO L93 Difference]: Finished difference Result 2093 states and 7626 transitions. [2021-06-05 03:40:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:43,042 INFO L225 Difference]: With dead ends: 2093 [2021-06-05 03:40:43,042 INFO L226 Difference]: Without dead ends: 1906 [2021-06-05 03:40:43,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-06-05 03:40:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1142. [2021-06-05 03:40:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.855390008764242) internal successors, (4399), 1141 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4399 transitions. [2021-06-05 03:40:43,068 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4399 transitions. Word has length 25 [2021-06-05 03:40:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:43,068 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4399 transitions. [2021-06-05 03:40:43,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4399 transitions. [2021-06-05 03:40:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:43,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:43,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:43,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-06-05 03:40:43,069 INFO L430 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:43,070 INFO L82 PathProgramCache]: Analyzing trace with hash 787745115, now seen corresponding path program 574 times [2021-06-05 03:40:43,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:43,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474998438] [2021-06-05 03:40:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:43,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:43,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474998438] [2021-06-05 03:40:43,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474998438] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:43,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:43,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:43,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110514026] [2021-06-05 03:40:43,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:43,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:43,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:43,148 INFO L87 Difference]: Start difference. First operand 1142 states and 4399 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:43,210 INFO L93 Difference]: Finished difference Result 1953 states and 7177 transitions. [2021-06-05 03:40:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:43,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:43,214 INFO L225 Difference]: With dead ends: 1953 [2021-06-05 03:40:43,214 INFO L226 Difference]: Without dead ends: 1754 [2021-06-05 03:40:43,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-06-05 03:40:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1118. [2021-06-05 03:40:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 3.8594449418084156) internal successors, (4311), 1117 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 4311 transitions. [2021-06-05 03:40:43,238 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 4311 transitions. Word has length 25 [2021-06-05 03:40:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:43,238 INFO L482 AbstractCegarLoop]: Abstraction has 1118 states and 4311 transitions. [2021-06-05 03:40:43,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 4311 transitions. [2021-06-05 03:40:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:43,239 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:43,239 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:43,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-06-05 03:40:43,240 INFO L430 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:43,240 INFO L82 PathProgramCache]: Analyzing trace with hash 577626297, now seen corresponding path program 575 times [2021-06-05 03:40:43,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:43,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791178031] [2021-06-05 03:40:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:43,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:43,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791178031] [2021-06-05 03:40:43,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791178031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:43,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:43,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354106635] [2021-06-05 03:40:43,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:43,318 INFO L87 Difference]: Start difference. First operand 1118 states and 4311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:43,375 INFO L93 Difference]: Finished difference Result 1881 states and 6913 transitions. [2021-06-05 03:40:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:43,378 INFO L225 Difference]: With dead ends: 1881 [2021-06-05 03:40:43,378 INFO L226 Difference]: Without dead ends: 1698 [2021-06-05 03:40:43,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2021-06-05 03:40:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1142. [2021-06-05 03:40:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.8448729184925505) internal successors, (4387), 1141 states have internal predecessors, (4387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4387 transitions. [2021-06-05 03:40:43,403 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4387 transitions. Word has length 25 [2021-06-05 03:40:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:43,403 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4387 transitions. [2021-06-05 03:40:43,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4387 transitions. [2021-06-05 03:40:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:43,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:43,404 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:43,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-06-05 03:40:43,404 INFO L430 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1658688923, now seen corresponding path program 576 times [2021-06-05 03:40:43,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:43,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017771971] [2021-06-05 03:40:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:43,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:43,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017771971] [2021-06-05 03:40:43,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017771971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:43,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:43,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:43,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121063684] [2021-06-05 03:40:43,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:43,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:43,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:43,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:43,482 INFO L87 Difference]: Start difference. First operand 1142 states and 4387 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:43,536 INFO L93 Difference]: Finished difference Result 1697 states and 6300 transitions. [2021-06-05 03:40:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:43,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:43,539 INFO L225 Difference]: With dead ends: 1697 [2021-06-05 03:40:43,539 INFO L226 Difference]: Without dead ends: 1482 [2021-06-05 03:40:43,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-06-05 03:40:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1102. [2021-06-05 03:40:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 3.877384196185286) internal successors, (4269), 1101 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4269 transitions. [2021-06-05 03:40:43,561 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4269 transitions. Word has length 25 [2021-06-05 03:40:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:43,561 INFO L482 AbstractCegarLoop]: Abstraction has 1102 states and 4269 transitions. [2021-06-05 03:40:43,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4269 transitions. [2021-06-05 03:40:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:43,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:43,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:43,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-06-05 03:40:43,562 INFO L430 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash 112877023, now seen corresponding path program 577 times [2021-06-05 03:40:43,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:43,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174773674] [2021-06-05 03:40:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:43,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:43,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174773674] [2021-06-05 03:40:43,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174773674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:43,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:43,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:43,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213451971] [2021-06-05 03:40:43,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:43,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:43,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:43,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:43,641 INFO L87 Difference]: Start difference. First operand 1102 states and 4269 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:43,705 INFO L93 Difference]: Finished difference Result 2267 states and 8325 transitions. [2021-06-05 03:40:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:43,709 INFO L225 Difference]: With dead ends: 2267 [2021-06-05 03:40:43,709 INFO L226 Difference]: Without dead ends: 2078 [2021-06-05 03:40:43,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-06-05 03:40:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1152. [2021-06-05 03:40:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.8731537793223283) internal successors, (4458), 1151 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4458 transitions. [2021-06-05 03:40:43,736 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4458 transitions. Word has length 25 [2021-06-05 03:40:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:43,736 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 4458 transitions. [2021-06-05 03:40:43,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4458 transitions. [2021-06-05 03:40:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:43,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:43,737 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:43,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-06-05 03:40:43,738 INFO L430 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:43,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1930459971, now seen corresponding path program 578 times [2021-06-05 03:40:43,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:43,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492134381] [2021-06-05 03:40:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:43,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:43,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492134381] [2021-06-05 03:40:43,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492134381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:43,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:43,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:43,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890807026] [2021-06-05 03:40:43,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:43,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:43,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:43,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:43,815 INFO L87 Difference]: Start difference. First operand 1152 states and 4458 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:43,872 INFO L93 Difference]: Finished difference Result 2265 states and 8290 transitions. [2021-06-05 03:40:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:43,876 INFO L225 Difference]: With dead ends: 2265 [2021-06-05 03:40:43,876 INFO L226 Difference]: Without dead ends: 2048 [2021-06-05 03:40:43,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-06-05 03:40:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1122. [2021-06-05 03:40:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.8813559322033897) internal successors, (4351), 1121 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4351 transitions. [2021-06-05 03:40:43,902 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4351 transitions. Word has length 25 [2021-06-05 03:40:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:43,902 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4351 transitions. [2021-06-05 03:40:43,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4351 transitions. [2021-06-05 03:40:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:43,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:43,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:43,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-06-05 03:40:43,903 INFO L430 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash -733919939, now seen corresponding path program 579 times [2021-06-05 03:40:43,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:43,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566671106] [2021-06-05 03:40:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:43,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:43,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566671106] [2021-06-05 03:40:43,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566671106] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:43,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:43,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490169398] [2021-06-05 03:40:43,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:43,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:43,979 INFO L87 Difference]: Start difference. First operand 1122 states and 4351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:44,043 INFO L93 Difference]: Finished difference Result 2261 states and 8292 transitions. [2021-06-05 03:40:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:44,048 INFO L225 Difference]: With dead ends: 2261 [2021-06-05 03:40:44,048 INFO L226 Difference]: Without dead ends: 2072 [2021-06-05 03:40:44,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-06-05 03:40:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1150. [2021-06-05 03:40:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.8633594429939078) internal successors, (4439), 1149 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4439 transitions. [2021-06-05 03:40:44,074 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4439 transitions. Word has length 25 [2021-06-05 03:40:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:44,074 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 4439 transitions. [2021-06-05 03:40:44,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4439 transitions. [2021-06-05 03:40:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:44,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:44,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:44,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-06-05 03:40:44,075 INFO L430 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:44,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:44,076 INFO L82 PathProgramCache]: Analyzing trace with hash 458546493, now seen corresponding path program 580 times [2021-06-05 03:40:44,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:44,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920124041] [2021-06-05 03:40:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:44,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:44,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920124041] [2021-06-05 03:40:44,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920124041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:44,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:44,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:44,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044092295] [2021-06-05 03:40:44,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:44,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:44,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:44,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:44,150 INFO L87 Difference]: Start difference. First operand 1150 states and 4439 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:44,209 INFO L93 Difference]: Finished difference Result 2255 states and 8247 transitions. [2021-06-05 03:40:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:44,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:44,213 INFO L225 Difference]: With dead ends: 2255 [2021-06-05 03:40:44,213 INFO L226 Difference]: Without dead ends: 2044 [2021-06-05 03:40:44,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2021-06-05 03:40:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1122. [2021-06-05 03:40:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.8688670829616414) internal successors, (4337), 1121 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4337 transitions. [2021-06-05 03:40:44,238 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4337 transitions. Word has length 25 [2021-06-05 03:40:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:44,239 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4337 transitions. [2021-06-05 03:40:44,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4337 transitions. [2021-06-05 03:40:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:44,240 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:44,240 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:44,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-06-05 03:40:44,240 INFO L430 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:44,240 INFO L82 PathProgramCache]: Analyzing trace with hash 248427675, now seen corresponding path program 581 times [2021-06-05 03:40:44,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:44,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400829177] [2021-06-05 03:40:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:44,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:44,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400829177] [2021-06-05 03:40:44,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400829177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:44,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:44,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:44,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111456325] [2021-06-05 03:40:44,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:44,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:44,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:44,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:44,321 INFO L87 Difference]: Start difference. First operand 1122 states and 4337 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:44,377 INFO L93 Difference]: Finished difference Result 2257 states and 8268 transitions. [2021-06-05 03:40:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:44,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:44,381 INFO L225 Difference]: With dead ends: 2257 [2021-06-05 03:40:44,381 INFO L226 Difference]: Without dead ends: 2070 [2021-06-05 03:40:44,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-06-05 03:40:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1150. [2021-06-05 03:40:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.8511749347258486) internal successors, (4425), 1149 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4425 transitions. [2021-06-05 03:40:44,407 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4425 transitions. Word has length 25 [2021-06-05 03:40:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:44,407 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 4425 transitions. [2021-06-05 03:40:44,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4425 transitions. [2021-06-05 03:40:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:44,408 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:44,408 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:44,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-06-05 03:40:44,408 INFO L430 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:44,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:44,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1329490301, now seen corresponding path program 582 times [2021-06-05 03:40:44,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:44,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879909019] [2021-06-05 03:40:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:44,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:44,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879909019] [2021-06-05 03:40:44,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879909019] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:44,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:44,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:44,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153552251] [2021-06-05 03:40:44,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:44,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:44,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:44,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:44,497 INFO L87 Difference]: Start difference. First operand 1150 states and 4425 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:44,554 INFO L93 Difference]: Finished difference Result 2253 states and 8228 transitions. [2021-06-05 03:40:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:44,558 INFO L225 Difference]: With dead ends: 2253 [2021-06-05 03:40:44,558 INFO L226 Difference]: Without dead ends: 2028 [2021-06-05 03:40:44,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2021-06-05 03:40:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1108. [2021-06-05 03:40:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.878952122854562) internal successors, (4294), 1107 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4294 transitions. [2021-06-05 03:40:44,583 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4294 transitions. Word has length 25 [2021-06-05 03:40:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:44,583 INFO L482 AbstractCegarLoop]: Abstraction has 1108 states and 4294 transitions. [2021-06-05 03:40:44,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4294 transitions. [2021-06-05 03:40:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:44,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:44,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:44,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-06-05 03:40:44,585 INFO L430 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:44,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1910184515, now seen corresponding path program 583 times [2021-06-05 03:40:44,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:44,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269415318] [2021-06-05 03:40:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:44,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:44,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269415318] [2021-06-05 03:40:44,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269415318] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:44,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:44,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:44,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139490594] [2021-06-05 03:40:44,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:44,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:44,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:44,666 INFO L87 Difference]: Start difference. First operand 1108 states and 4294 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:44,731 INFO L93 Difference]: Finished difference Result 2223 states and 8131 transitions. [2021-06-05 03:40:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:44,735 INFO L225 Difference]: With dead ends: 2223 [2021-06-05 03:40:44,735 INFO L226 Difference]: Without dead ends: 2034 [2021-06-05 03:40:44,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-06-05 03:40:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1150. [2021-06-05 03:40:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.866840731070496) internal successors, (4443), 1149 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4443 transitions. [2021-06-05 03:40:44,761 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4443 transitions. Word has length 25 [2021-06-05 03:40:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:44,761 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 4443 transitions. [2021-06-05 03:40:44,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4443 transitions. [2021-06-05 03:40:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:44,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:44,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:44,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-06-05 03:40:44,763 INFO L430 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:44,763 INFO L82 PathProgramCache]: Analyzing trace with hash 341445787, now seen corresponding path program 584 times [2021-06-05 03:40:44,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:44,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098303422] [2021-06-05 03:40:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:44,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:44,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098303422] [2021-06-05 03:40:44,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098303422] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:44,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:44,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:44,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808646330] [2021-06-05 03:40:44,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:44,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:44,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:44,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:44,852 INFO L87 Difference]: Start difference. First operand 1150 states and 4443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:44,922 INFO L93 Difference]: Finished difference Result 2221 states and 8096 transitions. [2021-06-05 03:40:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:44,927 INFO L225 Difference]: With dead ends: 2221 [2021-06-05 03:40:44,927 INFO L226 Difference]: Without dead ends: 2004 [2021-06-05 03:40:44,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:44,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-06-05 03:40:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1120. [2021-06-05 03:40:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.876675603217158) internal successors, (4338), 1119 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4338 transitions. [2021-06-05 03:40:44,964 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4338 transitions. Word has length 25 [2021-06-05 03:40:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:44,964 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4338 transitions. [2021-06-05 03:40:44,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4338 transitions. [2021-06-05 03:40:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:44,966 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:44,966 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:44,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-06-05 03:40:44,966 INFO L430 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:44,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1588755901, now seen corresponding path program 585 times [2021-06-05 03:40:44,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:44,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32661211] [2021-06-05 03:40:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:45,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:45,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32661211] [2021-06-05 03:40:45,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32661211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:45,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:45,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:45,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243183721] [2021-06-05 03:40:45,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:45,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:45,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:45,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:45,081 INFO L87 Difference]: Start difference. First operand 1120 states and 4338 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:45,155 INFO L93 Difference]: Finished difference Result 2143 states and 7835 transitions. [2021-06-05 03:40:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:45,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:45,159 INFO L225 Difference]: With dead ends: 2143 [2021-06-05 03:40:45,159 INFO L226 Difference]: Without dead ends: 1954 [2021-06-05 03:40:45,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-06-05 03:40:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1144. [2021-06-05 03:40:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.8617672790901136) internal successors, (4414), 1143 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4414 transitions. [2021-06-05 03:40:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4414 transitions. Word has length 25 [2021-06-05 03:40:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:45,184 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4414 transitions. [2021-06-05 03:40:45,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4414 transitions. [2021-06-05 03:40:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:45,186 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:45,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:45,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-06-05 03:40:45,186 INFO L430 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2144544189, now seen corresponding path program 586 times [2021-06-05 03:40:45,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:45,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69699487] [2021-06-05 03:40:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:45,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:45,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69699487] [2021-06-05 03:40:45,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69699487] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:45,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:45,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:45,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735642676] [2021-06-05 03:40:45,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:45,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:45,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:45,272 INFO L87 Difference]: Start difference. First operand 1144 states and 4414 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:45,334 INFO L93 Difference]: Finished difference Result 2001 states and 7381 transitions. [2021-06-05 03:40:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:45,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:45,338 INFO L225 Difference]: With dead ends: 2001 [2021-06-05 03:40:45,338 INFO L226 Difference]: Without dead ends: 1802 [2021-06-05 03:40:45,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-06-05 03:40:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1120. [2021-06-05 03:40:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8659517426273458) internal successors, (4326), 1119 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4326 transitions. [2021-06-05 03:40:45,362 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4326 transitions. Word has length 25 [2021-06-05 03:40:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:45,362 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4326 transitions. [2021-06-05 03:40:45,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4326 transitions. [2021-06-05 03:40:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:45,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:45,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:45,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-06-05 03:40:45,364 INFO L430 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:45,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1723863781, now seen corresponding path program 587 times [2021-06-05 03:40:45,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:45,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124195328] [2021-06-05 03:40:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:45,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:45,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124195328] [2021-06-05 03:40:45,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124195328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:45,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:45,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:45,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214789428] [2021-06-05 03:40:45,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:45,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:45,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:45,439 INFO L87 Difference]: Start difference. First operand 1120 states and 4326 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:45,497 INFO L93 Difference]: Finished difference Result 2141 states and 7818 transitions. [2021-06-05 03:40:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:45,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:45,501 INFO L225 Difference]: With dead ends: 2141 [2021-06-05 03:40:45,501 INFO L226 Difference]: Without dead ends: 1954 [2021-06-05 03:40:45,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-06-05 03:40:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1144. [2021-06-05 03:40:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.851268591426072) internal successors, (4402), 1143 states have internal predecessors, (4402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4402 transitions. [2021-06-05 03:40:45,526 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4402 transitions. Word has length 25 [2021-06-05 03:40:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:45,526 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4402 transitions. [2021-06-05 03:40:45,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4402 transitions. [2021-06-05 03:40:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:45,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:45,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:45,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-06-05 03:40:45,527 INFO L430 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1930671747, now seen corresponding path program 588 times [2021-06-05 03:40:45,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:45,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967157713] [2021-06-05 03:40:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:45,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:45,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967157713] [2021-06-05 03:40:45,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967157713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:45,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:45,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:45,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150280923] [2021-06-05 03:40:45,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:45,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:45,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:45,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:45,602 INFO L87 Difference]: Start difference. First operand 1144 states and 4402 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:45,668 INFO L93 Difference]: Finished difference Result 2001 states and 7369 transitions. [2021-06-05 03:40:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:45,671 INFO L225 Difference]: With dead ends: 2001 [2021-06-05 03:40:45,671 INFO L226 Difference]: Without dead ends: 1790 [2021-06-05 03:40:45,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-06-05 03:40:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1108. [2021-06-05 03:40:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.8735320686540198) internal successors, (4288), 1107 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4288 transitions. [2021-06-05 03:40:45,695 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4288 transitions. Word has length 25 [2021-06-05 03:40:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:45,695 INFO L482 AbstractCegarLoop]: Abstraction has 1108 states and 4288 transitions. [2021-06-05 03:40:45,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4288 transitions. [2021-06-05 03:40:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:45,697 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:45,697 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:45,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-06-05 03:40:45,697 INFO L430 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1528034715, now seen corresponding path program 589 times [2021-06-05 03:40:45,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:45,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816228600] [2021-06-05 03:40:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:45,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:45,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816228600] [2021-06-05 03:40:45,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816228600] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:45,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:45,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:45,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253834864] [2021-06-05 03:40:45,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:45,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:45,773 INFO L87 Difference]: Start difference. First operand 1108 states and 4288 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:45,836 INFO L93 Difference]: Finished difference Result 2115 states and 7713 transitions. [2021-06-05 03:40:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:45,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:45,839 INFO L225 Difference]: With dead ends: 2115 [2021-06-05 03:40:45,839 INFO L226 Difference]: Without dead ends: 1926 [2021-06-05 03:40:45,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-06-05 03:40:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1148. [2021-06-05 03:40:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.8639930252833476) internal successors, (4432), 1147 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4432 transitions. [2021-06-05 03:40:45,865 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4432 transitions. Word has length 25 [2021-06-05 03:40:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:45,865 INFO L482 AbstractCegarLoop]: Abstraction has 1148 states and 4432 transitions. [2021-06-05 03:40:45,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4432 transitions. [2021-06-05 03:40:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:45,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:45,867 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:45,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-06-05 03:40:45,867 INFO L430 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:45,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1574466149, now seen corresponding path program 590 times [2021-06-05 03:40:45,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:45,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335059174] [2021-06-05 03:40:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:45,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:45,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335059174] [2021-06-05 03:40:45,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335059174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:45,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:45,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:45,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550082185] [2021-06-05 03:40:45,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:45,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:45,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:45,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:45,942 INFO L87 Difference]: Start difference. First operand 1148 states and 4432 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:46,001 INFO L93 Difference]: Finished difference Result 2109 states and 7668 transitions. [2021-06-05 03:40:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:46,004 INFO L225 Difference]: With dead ends: 2109 [2021-06-05 03:40:46,004 INFO L226 Difference]: Without dead ends: 1898 [2021-06-05 03:40:46,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-06-05 03:40:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1120. [2021-06-05 03:40:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.871313672922252) internal successors, (4332), 1119 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4332 transitions. [2021-06-05 03:40:46,029 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4332 transitions. Word has length 25 [2021-06-05 03:40:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:46,029 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4332 transitions. [2021-06-05 03:40:46,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4332 transitions. [2021-06-05 03:40:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:46,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:46,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:46,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-06-05 03:40:46,031 INFO L430 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1047132669, now seen corresponding path program 591 times [2021-06-05 03:40:46,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:46,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603491108] [2021-06-05 03:40:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:46,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:46,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603491108] [2021-06-05 03:40:46,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603491108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:46,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:46,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:46,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206751116] [2021-06-05 03:40:46,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:46,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:46,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:46,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:46,117 INFO L87 Difference]: Start difference. First operand 1120 states and 4332 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:46,184 INFO L93 Difference]: Finished difference Result 2017 states and 7336 transitions. [2021-06-05 03:40:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:46,187 INFO L225 Difference]: With dead ends: 2017 [2021-06-05 03:40:46,187 INFO L226 Difference]: Without dead ends: 1828 [2021-06-05 03:40:46,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-06-05 03:40:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1144. [2021-06-05 03:40:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.856517935258093) internal successors, (4408), 1143 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4408 transitions. [2021-06-05 03:40:46,212 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4408 transitions. Word has length 25 [2021-06-05 03:40:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:46,212 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4408 transitions. [2021-06-05 03:40:46,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4408 transitions. [2021-06-05 03:40:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:46,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:46,214 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:46,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-06-05 03:40:46,214 INFO L430 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:46,214 INFO L82 PathProgramCache]: Analyzing trace with hash 121482651, now seen corresponding path program 592 times [2021-06-05 03:40:46,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:46,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412280039] [2021-06-05 03:40:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:46,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:46,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412280039] [2021-06-05 03:40:46,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412280039] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:46,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:46,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:46,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275475212] [2021-06-05 03:40:46,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:46,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:46,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:46,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:46,301 INFO L87 Difference]: Start difference. First operand 1144 states and 4408 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:46,364 INFO L93 Difference]: Finished difference Result 1875 states and 6882 transitions. [2021-06-05 03:40:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:46,368 INFO L225 Difference]: With dead ends: 1875 [2021-06-05 03:40:46,368 INFO L226 Difference]: Without dead ends: 1676 [2021-06-05 03:40:46,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-06-05 03:40:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1120. [2021-06-05 03:40:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8605898123324396) internal successors, (4320), 1119 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4320 transitions. [2021-06-05 03:40:46,391 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4320 transitions. Word has length 25 [2021-06-05 03:40:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:46,392 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4320 transitions. [2021-06-05 03:40:46,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4320 transitions. [2021-06-05 03:40:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:46,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:46,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:46,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-06-05 03:40:46,393 INFO L430 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash -37866085, now seen corresponding path program 593 times [2021-06-05 03:40:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:46,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353995363] [2021-06-05 03:40:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:46,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:46,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353995363] [2021-06-05 03:40:46,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353995363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:46,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:46,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:46,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861803700] [2021-06-05 03:40:46,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:46,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:46,470 INFO L87 Difference]: Start difference. First operand 1120 states and 4320 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:46,530 INFO L93 Difference]: Finished difference Result 1883 states and 6922 transitions. [2021-06-05 03:40:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:46,533 INFO L225 Difference]: With dead ends: 1883 [2021-06-05 03:40:46,533 INFO L226 Difference]: Without dead ends: 1700 [2021-06-05 03:40:46,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-06-05 03:40:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1144. [2021-06-05 03:40:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.8460192475940507) internal successors, (4396), 1143 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4396 transitions. [2021-06-05 03:40:46,569 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4396 transitions. Word has length 25 [2021-06-05 03:40:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:46,569 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4396 transitions. [2021-06-05 03:40:46,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4396 transitions. [2021-06-05 03:40:46,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:46,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:46,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:46,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-06-05 03:40:46,571 INFO L430 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:46,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1043196541, now seen corresponding path program 594 times [2021-06-05 03:40:46,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:46,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250577969] [2021-06-05 03:40:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:46,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:46,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250577969] [2021-06-05 03:40:46,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250577969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:46,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:46,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:46,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211019397] [2021-06-05 03:40:46,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:46,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:46,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:46,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:46,660 INFO L87 Difference]: Start difference. First operand 1144 states and 4396 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:46,719 INFO L93 Difference]: Finished difference Result 1699 states and 6309 transitions. [2021-06-05 03:40:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:46,722 INFO L225 Difference]: With dead ends: 1699 [2021-06-05 03:40:46,722 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 03:40:46,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 03:40:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1108. [2021-06-05 03:40:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.868112014453478) internal successors, (4282), 1107 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4282 transitions. [2021-06-05 03:40:46,749 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4282 transitions. Word has length 25 [2021-06-05 03:40:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:46,750 INFO L482 AbstractCegarLoop]: Abstraction has 1108 states and 4282 transitions. [2021-06-05 03:40:46,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4282 transitions. [2021-06-05 03:40:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:46,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:46,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:46,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-06-05 03:40:46,751 INFO L430 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1794536071, now seen corresponding path program 595 times [2021-06-05 03:40:46,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:46,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871451145] [2021-06-05 03:40:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:46,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:46,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871451145] [2021-06-05 03:40:46,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871451145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:46,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:46,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:46,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670361264] [2021-06-05 03:40:46,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:46,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:46,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:46,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:46,828 INFO L87 Difference]: Start difference. First operand 1108 states and 4282 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:46,892 INFO L93 Difference]: Finished difference Result 1803 states and 6620 transitions. [2021-06-05 03:40:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:46,896 INFO L225 Difference]: With dead ends: 1803 [2021-06-05 03:40:46,896 INFO L226 Difference]: Without dead ends: 1616 [2021-06-05 03:40:46,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-06-05 03:40:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1148. [2021-06-05 03:40:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.858761987794246) internal successors, (4426), 1147 states have internal predecessors, (4426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4426 transitions. [2021-06-05 03:40:46,919 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4426 transitions. Word has length 25 [2021-06-05 03:40:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:46,919 INFO L482 AbstractCegarLoop]: Abstraction has 1148 states and 4426 transitions. [2021-06-05 03:40:46,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4426 transitions. [2021-06-05 03:40:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:46,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:46,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:46,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-06-05 03:40:46,921 INFO L430 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:46,921 INFO L82 PathProgramCache]: Analyzing trace with hash -713473445, now seen corresponding path program 596 times [2021-06-05 03:40:46,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:46,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809094414] [2021-06-05 03:40:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:46,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:46,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809094414] [2021-06-05 03:40:46,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809094414] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:46,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:46,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:46,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604731662] [2021-06-05 03:40:46,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:46,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:46,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:46,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:46,999 INFO L87 Difference]: Start difference. First operand 1148 states and 4426 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:47,059 INFO L93 Difference]: Finished difference Result 1799 states and 6580 transitions. [2021-06-05 03:40:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:47,062 INFO L225 Difference]: With dead ends: 1799 [2021-06-05 03:40:47,062 INFO L226 Difference]: Without dead ends: 1588 [2021-06-05 03:40:47,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-06-05 03:40:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1120. [2021-06-05 03:40:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8659517426273458) internal successors, (4326), 1119 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4326 transitions. [2021-06-05 03:40:47,085 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4326 transitions. Word has length 25 [2021-06-05 03:40:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:47,085 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4326 transitions. [2021-06-05 03:40:47,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4326 transitions. [2021-06-05 03:40:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:47,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:47,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:47,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-06-05 03:40:47,087 INFO L430 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:47,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2019529179, now seen corresponding path program 597 times [2021-06-05 03:40:47,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:47,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483653392] [2021-06-05 03:40:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:47,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:47,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483653392] [2021-06-05 03:40:47,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483653392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:47,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:47,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:47,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616142631] [2021-06-05 03:40:47,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:47,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:47,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:47,167 INFO L87 Difference]: Start difference. First operand 1120 states and 4326 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:47,232 INFO L93 Difference]: Finished difference Result 1715 states and 6276 transitions. [2021-06-05 03:40:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:47,235 INFO L225 Difference]: With dead ends: 1715 [2021-06-05 03:40:47,235 INFO L226 Difference]: Without dead ends: 1528 [2021-06-05 03:40:47,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-06-05 03:40:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1144. [2021-06-05 03:40:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.851268591426072) internal successors, (4402), 1143 states have internal predecessors, (4402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4402 transitions. [2021-06-05 03:40:47,259 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4402 transitions. Word has length 25 [2021-06-05 03:40:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:47,259 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4402 transitions. [2021-06-05 03:40:47,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4402 transitions. [2021-06-05 03:40:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:47,260 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:47,260 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:47,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-06-05 03:40:47,260 INFO L430 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:47,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:47,261 INFO L82 PathProgramCache]: Analyzing trace with hash 331282907, now seen corresponding path program 598 times [2021-06-05 03:40:47,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:47,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561364747] [2021-06-05 03:40:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:47,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:47,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561364747] [2021-06-05 03:40:47,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561364747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:47,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:47,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:47,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679310082] [2021-06-05 03:40:47,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:47,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:47,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:47,337 INFO L87 Difference]: Start difference. First operand 1144 states and 4402 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:47,395 INFO L93 Difference]: Finished difference Result 1575 states and 5827 transitions. [2021-06-05 03:40:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:47,397 INFO L225 Difference]: With dead ends: 1575 [2021-06-05 03:40:47,397 INFO L226 Difference]: Without dead ends: 1376 [2021-06-05 03:40:47,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-06-05 03:40:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1120. [2021-06-05 03:40:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8552278820375334) internal successors, (4314), 1119 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4314 transitions. [2021-06-05 03:40:47,419 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4314 transitions. Word has length 25 [2021-06-05 03:40:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:47,419 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4314 transitions. [2021-06-05 03:40:47,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4314 transitions. [2021-06-05 03:40:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:47,420 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:47,420 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:47,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-06-05 03:40:47,421 INFO L430 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1887433155, now seen corresponding path program 599 times [2021-06-05 03:40:47,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:47,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664137154] [2021-06-05 03:40:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:47,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:47,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664137154] [2021-06-05 03:40:47,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664137154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:47,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:47,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:47,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590604485] [2021-06-05 03:40:47,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:47,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:47,496 INFO L87 Difference]: Start difference. First operand 1120 states and 4314 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:47,548 INFO L93 Difference]: Finished difference Result 1503 states and 5563 transitions. [2021-06-05 03:40:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:47,551 INFO L225 Difference]: With dead ends: 1503 [2021-06-05 03:40:47,551 INFO L226 Difference]: Without dead ends: 1320 [2021-06-05 03:40:47,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-06-05 03:40:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1144. [2021-06-05 03:40:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.8407699037620295) internal successors, (4390), 1143 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4390 transitions. [2021-06-05 03:40:47,573 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4390 transitions. Word has length 25 [2021-06-05 03:40:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:47,573 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4390 transitions. [2021-06-05 03:40:47,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4390 transitions. [2021-06-05 03:40:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:47,574 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:47,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:47,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-06-05 03:40:47,574 INFO L430 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1560737179, now seen corresponding path program 600 times [2021-06-05 03:40:47,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:47,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245347204] [2021-06-05 03:40:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:47,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:47,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245347204] [2021-06-05 03:40:47,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245347204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:47,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:47,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:47,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526202834] [2021-06-05 03:40:47,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:47,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:47,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:47,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:47,650 INFO L87 Difference]: Start difference. First operand 1144 states and 4390 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:47,705 INFO L93 Difference]: Finished difference Result 1319 states and 4950 transitions. [2021-06-05 03:40:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:47,708 INFO L225 Difference]: With dead ends: 1319 [2021-06-05 03:40:47,708 INFO L226 Difference]: Without dead ends: 1100 [2021-06-05 03:40:47,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-06-05 03:40:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1100. [2021-06-05 03:40:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.880800727934486) internal successors, (4265), 1099 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4265 transitions. [2021-06-05 03:40:47,727 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4265 transitions. Word has length 25 [2021-06-05 03:40:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:47,727 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4265 transitions. [2021-06-05 03:40:47,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4265 transitions. [2021-06-05 03:40:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:47,729 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:47,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:47,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-06-05 03:40:47,729 INFO L430 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1731112383, now seen corresponding path program 601 times [2021-06-05 03:40:47,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:47,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809754017] [2021-06-05 03:40:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:47,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:47,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809754017] [2021-06-05 03:40:47,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809754017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:47,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:47,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:47,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785265113] [2021-06-05 03:40:47,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:47,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:47,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:47,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:47,805 INFO L87 Difference]: Start difference. First operand 1100 states and 4265 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:47,866 INFO L93 Difference]: Finished difference Result 2103 states and 7646 transitions. [2021-06-05 03:40:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:47,870 INFO L225 Difference]: With dead ends: 2103 [2021-06-05 03:40:47,870 INFO L226 Difference]: Without dead ends: 1914 [2021-06-05 03:40:47,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-06-05 03:40:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1144. [2021-06-05 03:40:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.869641294838145) internal successors, (4423), 1143 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4423 transitions. [2021-06-05 03:40:47,894 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4423 transitions. Word has length 25 [2021-06-05 03:40:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:47,895 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4423 transitions. [2021-06-05 03:40:47,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4423 transitions. [2021-06-05 03:40:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:47,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:47,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:47,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-06-05 03:40:47,896 INFO L430 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash 520517919, now seen corresponding path program 602 times [2021-06-05 03:40:47,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:47,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311211665] [2021-06-05 03:40:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:47,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:47,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311211665] [2021-06-05 03:40:47,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311211665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:47,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:47,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:47,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833457022] [2021-06-05 03:40:47,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:47,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:47,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:47,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:47,973 INFO L87 Difference]: Start difference. First operand 1144 states and 4423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:48,030 INFO L93 Difference]: Finished difference Result 2101 states and 7611 transitions. [2021-06-05 03:40:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:48,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:48,034 INFO L225 Difference]: With dead ends: 2101 [2021-06-05 03:40:48,034 INFO L226 Difference]: Without dead ends: 1884 [2021-06-05 03:40:48,034 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-06-05 03:40:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1114. [2021-06-05 03:40:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.8778077268643307) internal successors, (4316), 1113 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4316 transitions. [2021-06-05 03:40:48,058 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4316 transitions. Word has length 25 [2021-06-05 03:40:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:48,059 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 4316 transitions. [2021-06-05 03:40:48,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4316 transitions. [2021-06-05 03:40:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:48,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:48,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:48,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-06-05 03:40:48,060 INFO L430 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:48,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1717057951, now seen corresponding path program 603 times [2021-06-05 03:40:48,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:48,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595442040] [2021-06-05 03:40:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:48,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:48,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595442040] [2021-06-05 03:40:48,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595442040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:48,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:48,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:48,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857480644] [2021-06-05 03:40:48,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:48,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:48,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:48,136 INFO L87 Difference]: Start difference. First operand 1114 states and 4316 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:48,195 INFO L93 Difference]: Finished difference Result 2097 states and 7613 transitions. [2021-06-05 03:40:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:48,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:48,198 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 03:40:48,198 INFO L226 Difference]: Without dead ends: 1908 [2021-06-05 03:40:48,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2021-06-05 03:40:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1142. [2021-06-05 03:40:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.85977212971078) internal successors, (4404), 1141 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4404 transitions. [2021-06-05 03:40:48,224 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4404 transitions. Word has length 25 [2021-06-05 03:40:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:48,224 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4404 transitions. [2021-06-05 03:40:48,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4404 transitions. [2021-06-05 03:40:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:48,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:48,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:48,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-06-05 03:40:48,225 INFO L430 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:48,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:48,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1385442913, now seen corresponding path program 604 times [2021-06-05 03:40:48,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:48,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117610363] [2021-06-05 03:40:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:48,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:48,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117610363] [2021-06-05 03:40:48,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117610363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:48,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:48,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:48,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963881612] [2021-06-05 03:40:48,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:48,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:48,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:48,305 INFO L87 Difference]: Start difference. First operand 1142 states and 4404 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:48,362 INFO L93 Difference]: Finished difference Result 2091 states and 7568 transitions. [2021-06-05 03:40:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:48,366 INFO L225 Difference]: With dead ends: 2091 [2021-06-05 03:40:48,366 INFO L226 Difference]: Without dead ends: 1880 [2021-06-05 03:40:48,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-06-05 03:40:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1114. [2021-06-05 03:40:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.8652291105121295) internal successors, (4302), 1113 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4302 transitions. [2021-06-05 03:40:48,390 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4302 transitions. Word has length 25 [2021-06-05 03:40:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:48,390 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 4302 transitions. [2021-06-05 03:40:48,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4302 transitions. [2021-06-05 03:40:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:48,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:48,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:48,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-06-05 03:40:48,392 INFO L430 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:48,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:48,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1595561731, now seen corresponding path program 605 times [2021-06-05 03:40:48,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:48,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845994125] [2021-06-05 03:40:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:48,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:48,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845994125] [2021-06-05 03:40:48,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845994125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:48,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:48,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:48,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197105228] [2021-06-05 03:40:48,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:48,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:48,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:48,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:48,471 INFO L87 Difference]: Start difference. First operand 1114 states and 4302 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:48,528 INFO L93 Difference]: Finished difference Result 2093 states and 7589 transitions. [2021-06-05 03:40:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:48,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:48,532 INFO L225 Difference]: With dead ends: 2093 [2021-06-05 03:40:48,532 INFO L226 Difference]: Without dead ends: 1906 [2021-06-05 03:40:48,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:48,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-06-05 03:40:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1142. [2021-06-05 03:40:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.847502191060473) internal successors, (4390), 1141 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4390 transitions. [2021-06-05 03:40:48,557 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4390 transitions. Word has length 25 [2021-06-05 03:40:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:48,557 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4390 transitions. [2021-06-05 03:40:48,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4390 transitions. [2021-06-05 03:40:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:48,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:48,559 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:48,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-06-05 03:40:48,559 INFO L430 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash -514499105, now seen corresponding path program 606 times [2021-06-05 03:40:48,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:48,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128855137] [2021-06-05 03:40:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:48,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:48,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128855137] [2021-06-05 03:40:48,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128855137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:48,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:48,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:48,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027364402] [2021-06-05 03:40:48,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:48,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:48,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:48,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:48,635 INFO L87 Difference]: Start difference. First operand 1142 states and 4390 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:48,690 INFO L93 Difference]: Finished difference Result 2089 states and 7549 transitions. [2021-06-05 03:40:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:48,693 INFO L225 Difference]: With dead ends: 2089 [2021-06-05 03:40:48,693 INFO L226 Difference]: Without dead ends: 1864 [2021-06-05 03:40:48,694 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:48,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-06-05 03:40:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1100. [2021-06-05 03:40:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.875341219290264) internal successors, (4259), 1099 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4259 transitions. [2021-06-05 03:40:48,718 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4259 transitions. Word has length 25 [2021-06-05 03:40:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:48,718 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4259 transitions. [2021-06-05 03:40:48,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4259 transitions. [2021-06-05 03:40:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:48,719 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:48,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:48,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-06-05 03:40:48,719 INFO L430 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash 540793375, now seen corresponding path program 607 times [2021-06-05 03:40:48,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:48,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237806761] [2021-06-05 03:40:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:48,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:48,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237806761] [2021-06-05 03:40:48,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237806761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:48,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:48,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:48,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540326004] [2021-06-05 03:40:48,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:48,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:48,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:48,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:48,795 INFO L87 Difference]: Start difference. First operand 1100 states and 4259 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:48,851 INFO L93 Difference]: Finished difference Result 2085 states and 7571 transitions. [2021-06-05 03:40:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:48,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:48,855 INFO L225 Difference]: With dead ends: 2085 [2021-06-05 03:40:48,855 INFO L226 Difference]: Without dead ends: 1896 [2021-06-05 03:40:48,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2021-06-05 03:40:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1142. [2021-06-05 03:40:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.8632778264680105) internal successors, (4408), 1141 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4408 transitions. [2021-06-05 03:40:48,880 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4408 transitions. Word has length 25 [2021-06-05 03:40:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:48,880 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4408 transitions. [2021-06-05 03:40:48,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4408 transitions. [2021-06-05 03:40:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:48,881 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:48,881 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:48,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-06-05 03:40:48,882 INFO L430 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1502543619, now seen corresponding path program 608 times [2021-06-05 03:40:48,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:48,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111347528] [2021-06-05 03:40:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:48,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:48,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111347528] [2021-06-05 03:40:48,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111347528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:48,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:48,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:48,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988890542] [2021-06-05 03:40:48,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:48,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:48,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:48,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:48,958 INFO L87 Difference]: Start difference. First operand 1142 states and 4408 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:49,016 INFO L93 Difference]: Finished difference Result 2083 states and 7536 transitions. [2021-06-05 03:40:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:49,019 INFO L225 Difference]: With dead ends: 2083 [2021-06-05 03:40:49,019 INFO L226 Difference]: Without dead ends: 1866 [2021-06-05 03:40:49,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-06-05 03:40:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1112. [2021-06-05 03:40:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.8730873087308733) internal successors, (4303), 1111 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4303 transitions. [2021-06-05 03:40:49,044 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4303 transitions. Word has length 25 [2021-06-05 03:40:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:49,044 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4303 transitions. [2021-06-05 03:40:49,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4303 transitions. [2021-06-05 03:40:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:49,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:49,045 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:49,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-06-05 03:40:49,045 INFO L430 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:49,046 INFO L82 PathProgramCache]: Analyzing trace with hash -255233505, now seen corresponding path program 609 times [2021-06-05 03:40:49,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:49,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016999404] [2021-06-05 03:40:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:49,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:49,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016999404] [2021-06-05 03:40:49,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016999404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:49,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:49,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:49,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909262896] [2021-06-05 03:40:49,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:49,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:49,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:49,153 INFO L87 Difference]: Start difference. First operand 1112 states and 4303 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:49,222 INFO L93 Difference]: Finished difference Result 2067 states and 7496 transitions. [2021-06-05 03:40:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:49,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:49,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:49,225 INFO L225 Difference]: With dead ends: 2067 [2021-06-05 03:40:49,226 INFO L226 Difference]: Without dead ends: 1878 [2021-06-05 03:40:49,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2021-06-05 03:40:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1136. [2021-06-05 03:40:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8581497797356827) internal successors, (4379), 1135 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4379 transitions. [2021-06-05 03:40:49,250 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4379 transitions. Word has length 25 [2021-06-05 03:40:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:49,250 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4379 transitions. [2021-06-05 03:40:49,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4379 transitions. [2021-06-05 03:40:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:49,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:49,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:49,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-06-05 03:40:49,252 INFO L430 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash 300554783, now seen corresponding path program 610 times [2021-06-05 03:40:49,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:49,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762547006] [2021-06-05 03:40:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:49,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:49,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762547006] [2021-06-05 03:40:49,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762547006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:49,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:49,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:49,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814762388] [2021-06-05 03:40:49,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:49,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:49,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:49,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:49,336 INFO L87 Difference]: Start difference. First operand 1136 states and 4379 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:49,393 INFO L93 Difference]: Finished difference Result 2053 states and 7427 transitions. [2021-06-05 03:40:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:49,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:49,397 INFO L225 Difference]: With dead ends: 2053 [2021-06-05 03:40:49,397 INFO L226 Difference]: Without dead ends: 1854 [2021-06-05 03:40:49,397 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-06-05 03:40:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1112. [2021-06-05 03:40:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.862286228622862) internal successors, (4291), 1111 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4291 transitions. [2021-06-05 03:40:49,421 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4291 transitions. Word has length 25 [2021-06-05 03:40:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:49,421 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4291 transitions. [2021-06-05 03:40:49,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4291 transitions. [2021-06-05 03:40:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:49,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:49,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:49,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-06-05 03:40:49,422 INFO L430 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash 727114109, now seen corresponding path program 611 times [2021-06-05 03:40:49,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:49,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595250115] [2021-06-05 03:40:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:49,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:49,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595250115] [2021-06-05 03:40:49,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595250115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:49,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:49,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:49,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772284282] [2021-06-05 03:40:49,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:49,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:49,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:49,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:49,497 INFO L87 Difference]: Start difference. First operand 1112 states and 4291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:49,555 INFO L93 Difference]: Finished difference Result 2063 states and 7474 transitions. [2021-06-05 03:40:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:49,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:49,558 INFO L225 Difference]: With dead ends: 2063 [2021-06-05 03:40:49,558 INFO L226 Difference]: Without dead ends: 1876 [2021-06-05 03:40:49,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2021-06-05 03:40:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1136. [2021-06-05 03:40:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8475770925110133) internal successors, (4367), 1135 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4367 transitions. [2021-06-05 03:40:49,582 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4367 transitions. Word has length 25 [2021-06-05 03:40:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:49,583 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4367 transitions. [2021-06-05 03:40:49,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4367 transitions. [2021-06-05 03:40:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:49,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:49,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:49,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-06-05 03:40:49,584 INFO L430 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:49,584 INFO L82 PathProgramCache]: Analyzing trace with hash 520306143, now seen corresponding path program 612 times [2021-06-05 03:40:49,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:49,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199849983] [2021-06-05 03:40:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:49,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:49,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199849983] [2021-06-05 03:40:49,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199849983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:49,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:49,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:49,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134695221] [2021-06-05 03:40:49,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:49,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:49,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:49,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:49,658 INFO L87 Difference]: Start difference. First operand 1136 states and 4367 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:49,712 INFO L93 Difference]: Finished difference Result 2051 states and 7410 transitions. [2021-06-05 03:40:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:49,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:49,716 INFO L225 Difference]: With dead ends: 2051 [2021-06-05 03:40:49,716 INFO L226 Difference]: Without dead ends: 1840 [2021-06-05 03:40:49,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2021-06-05 03:40:49,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1100. [2021-06-05 03:40:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.869881710646042) internal successors, (4253), 1099 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4253 transitions. [2021-06-05 03:40:49,740 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4253 transitions. Word has length 25 [2021-06-05 03:40:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:49,740 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4253 transitions. [2021-06-05 03:40:49,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4253 transitions. [2021-06-05 03:40:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:49,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:49,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:49,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-06-05 03:40:49,742 INFO L430 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:49,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:49,742 INFO L82 PathProgramCache]: Analyzing trace with hash -315954691, now seen corresponding path program 613 times [2021-06-05 03:40:49,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:49,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638465842] [2021-06-05 03:40:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:49,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:49,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638465842] [2021-06-05 03:40:49,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638465842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:49,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:49,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:49,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315526049] [2021-06-05 03:40:49,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:49,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:49,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:49,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:49,816 INFO L87 Difference]: Start difference. First operand 1100 states and 4253 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:49,873 INFO L93 Difference]: Finished difference Result 2073 states and 7527 transitions. [2021-06-05 03:40:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:49,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:49,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:49,876 INFO L225 Difference]: With dead ends: 2073 [2021-06-05 03:40:49,876 INFO L226 Difference]: Without dead ends: 1884 [2021-06-05 03:40:49,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-06-05 03:40:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1140. [2021-06-05 03:40:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.8604038630377526) internal successors, (4397), 1139 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4397 transitions. [2021-06-05 03:40:49,901 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4397 transitions. Word has length 25 [2021-06-05 03:40:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:49,904 INFO L482 AbstractCegarLoop]: Abstraction has 1140 states and 4397 transitions. [2021-06-05 03:40:49,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4397 transitions. [2021-06-05 03:40:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:49,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:49,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:49,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-06-05 03:40:49,907 INFO L430 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:49,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:49,907 INFO L82 PathProgramCache]: Analyzing trace with hash 876511741, now seen corresponding path program 614 times [2021-06-05 03:40:49,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:49,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690743813] [2021-06-05 03:40:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:49,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:49,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690743813] [2021-06-05 03:40:49,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690743813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:49,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:49,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808689099] [2021-06-05 03:40:49,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:49,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:49,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:49,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:49,985 INFO L87 Difference]: Start difference. First operand 1140 states and 4397 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:50,039 INFO L93 Difference]: Finished difference Result 2067 states and 7482 transitions. [2021-06-05 03:40:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:50,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:50,043 INFO L225 Difference]: With dead ends: 2067 [2021-06-05 03:40:50,043 INFO L226 Difference]: Without dead ends: 1856 [2021-06-05 03:40:50,043 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-06-05 03:40:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1112. [2021-06-05 03:40:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.867686768676868) internal successors, (4297), 1111 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4297 transitions. [2021-06-05 03:40:50,067 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4297 transitions. Word has length 25 [2021-06-05 03:40:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:50,067 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4297 transitions. [2021-06-05 03:40:50,067 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4297 transitions. [2021-06-05 03:40:50,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:50,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:50,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:50,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-06-05 03:40:50,069 INFO L430 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:50,069 INFO L82 PathProgramCache]: Analyzing trace with hash -796856737, now seen corresponding path program 615 times [2021-06-05 03:40:50,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:50,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693727376] [2021-06-05 03:40:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:50,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:50,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693727376] [2021-06-05 03:40:50,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693727376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:50,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:50,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:50,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410903781] [2021-06-05 03:40:50,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:50,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:50,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:50,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:50,155 INFO L87 Difference]: Start difference. First operand 1112 states and 4297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:50,212 INFO L93 Difference]: Finished difference Result 2061 states and 7471 transitions. [2021-06-05 03:40:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:50,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:50,216 INFO L225 Difference]: With dead ends: 2061 [2021-06-05 03:40:50,216 INFO L226 Difference]: Without dead ends: 1872 [2021-06-05 03:40:50,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2021-06-05 03:40:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1136. [2021-06-05 03:40:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.852863436123348) internal successors, (4373), 1135 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4373 transitions. [2021-06-05 03:40:50,240 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4373 transitions. Word has length 25 [2021-06-05 03:40:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:50,240 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4373 transitions. [2021-06-05 03:40:50,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4373 transitions. [2021-06-05 03:40:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:50,242 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:50,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:50,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-06-05 03:40:50,242 INFO L430 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:50,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1722506755, now seen corresponding path program 616 times [2021-06-05 03:40:50,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:50,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407131787] [2021-06-05 03:40:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:50,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:50,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407131787] [2021-06-05 03:40:50,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407131787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:50,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:50,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:50,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240991459] [2021-06-05 03:40:50,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:50,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:50,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:50,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:50,327 INFO L87 Difference]: Start difference. First operand 1136 states and 4373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:50,383 INFO L93 Difference]: Finished difference Result 2047 states and 7402 transitions. [2021-06-05 03:40:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:50,387 INFO L225 Difference]: With dead ends: 2047 [2021-06-05 03:40:50,387 INFO L226 Difference]: Without dead ends: 1848 [2021-06-05 03:40:50,387 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-06-05 03:40:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1112. [2021-06-05 03:40:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.8568856885688567) internal successors, (4285), 1111 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4285 transitions. [2021-06-05 03:40:50,412 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4285 transitions. Word has length 25 [2021-06-05 03:40:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:50,412 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4285 transitions. [2021-06-05 03:40:50,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4285 transitions. [2021-06-05 03:40:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:50,413 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:50,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:50,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-06-05 03:40:50,414 INFO L430 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:50,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1881855491, now seen corresponding path program 617 times [2021-06-05 03:40:50,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:50,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960406156] [2021-06-05 03:40:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:50,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:50,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960406156] [2021-06-05 03:40:50,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960406156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:50,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:50,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:50,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172152452] [2021-06-05 03:40:50,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:50,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:50,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:50,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:50,493 INFO L87 Difference]: Start difference. First operand 1112 states and 4285 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:50,553 INFO L93 Difference]: Finished difference Result 2049 states and 7425 transitions. [2021-06-05 03:40:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:50,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:50,556 INFO L225 Difference]: With dead ends: 2049 [2021-06-05 03:40:50,556 INFO L226 Difference]: Without dead ends: 1866 [2021-06-05 03:40:50,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:50,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-06-05 03:40:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1136. [2021-06-05 03:40:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8422907488986784) internal successors, (4361), 1135 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4361 transitions. [2021-06-05 03:40:50,580 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4361 transitions. Word has length 25 [2021-06-05 03:40:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:50,581 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4361 transitions. [2021-06-05 03:40:50,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4361 transitions. [2021-06-05 03:40:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:50,582 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:50,582 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:50,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-06-05 03:40:50,582 INFO L430 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:50,582 INFO L82 PathProgramCache]: Analyzing trace with hash -800792865, now seen corresponding path program 618 times [2021-06-05 03:40:50,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:50,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532159213] [2021-06-05 03:40:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:50,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:50,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532159213] [2021-06-05 03:40:50,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532159213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:50,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:50,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:50,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159024826] [2021-06-05 03:40:50,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:50,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:50,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:50,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:50,657 INFO L87 Difference]: Start difference. First operand 1136 states and 4361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:50,715 INFO L93 Difference]: Finished difference Result 2041 states and 7373 transitions. [2021-06-05 03:40:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:50,718 INFO L225 Difference]: With dead ends: 2041 [2021-06-05 03:40:50,718 INFO L226 Difference]: Without dead ends: 1830 [2021-06-05 03:40:50,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-06-05 03:40:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1100. [2021-06-05 03:40:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.86442220200182) internal successors, (4247), 1099 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4247 transitions. [2021-06-05 03:40:50,742 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4247 transitions. Word has length 25 [2021-06-05 03:40:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:50,742 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4247 transitions. [2021-06-05 03:40:50,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4247 transitions. [2021-06-05 03:40:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:50,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:50,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:50,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-06-05 03:40:50,744 INFO L430 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash 656441819, now seen corresponding path program 619 times [2021-06-05 03:40:50,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:50,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914095222] [2021-06-05 03:40:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:50,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:50,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914095222] [2021-06-05 03:40:50,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914095222] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:50,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:50,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:50,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118818582] [2021-06-05 03:40:50,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:50,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:50,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:50,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:50,819 INFO L87 Difference]: Start difference. First operand 1100 states and 4247 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:50,875 INFO L93 Difference]: Finished difference Result 2067 states and 7506 transitions. [2021-06-05 03:40:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:50,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:50,878 INFO L225 Difference]: With dead ends: 2067 [2021-06-05 03:40:50,879 INFO L226 Difference]: Without dead ends: 1880 [2021-06-05 03:40:50,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-06-05 03:40:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1140. [2021-06-05 03:40:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.85513608428446) internal successors, (4391), 1139 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4391 transitions. [2021-06-05 03:40:50,903 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4391 transitions. Word has length 25 [2021-06-05 03:40:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:50,903 INFO L482 AbstractCegarLoop]: Abstraction has 1140 states and 4391 transitions. [2021-06-05 03:40:50,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4391 transitions. [2021-06-05 03:40:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:50,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:50,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:50,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-06-05 03:40:50,905 INFO L430 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1737504445, now seen corresponding path program 620 times [2021-06-05 03:40:50,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:50,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810480241] [2021-06-05 03:40:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:50,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:50,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810480241] [2021-06-05 03:40:50,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810480241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:50,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:50,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:50,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767211110] [2021-06-05 03:40:50,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:50,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:50,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:50,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:50,982 INFO L87 Difference]: Start difference. First operand 1140 states and 4391 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:51,035 INFO L93 Difference]: Finished difference Result 2063 states and 7466 transitions. [2021-06-05 03:40:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:51,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:51,039 INFO L225 Difference]: With dead ends: 2063 [2021-06-05 03:40:51,039 INFO L226 Difference]: Without dead ends: 1852 [2021-06-05 03:40:51,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2021-06-05 03:40:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1112. [2021-06-05 03:40:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.862286228622862) internal successors, (4291), 1111 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4291 transitions. [2021-06-05 03:40:51,063 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4291 transitions. Word has length 25 [2021-06-05 03:40:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:51,063 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4291 transitions. [2021-06-05 03:40:51,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4291 transitions. [2021-06-05 03:40:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:51,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:51,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:51,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-06-05 03:40:51,065 INFO L430 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:51,065 INFO L82 PathProgramCache]: Analyzing trace with hash 175539773, now seen corresponding path program 621 times [2021-06-05 03:40:51,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:51,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593898122] [2021-06-05 03:40:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:51,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:51,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593898122] [2021-06-05 03:40:51,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593898122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:51,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:51,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:51,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111531625] [2021-06-05 03:40:51,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:51,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:51,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:51,141 INFO L87 Difference]: Start difference. First operand 1112 states and 4291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:51,198 INFO L93 Difference]: Finished difference Result 2055 states and 7450 transitions. [2021-06-05 03:40:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:51,201 INFO L225 Difference]: With dead ends: 2055 [2021-06-05 03:40:51,201 INFO L226 Difference]: Without dead ends: 1868 [2021-06-05 03:40:51,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:51,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-06-05 03:40:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1136. [2021-06-05 03:40:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8475770925110133) internal successors, (4367), 1135 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4367 transitions. [2021-06-05 03:40:51,226 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4367 transitions. Word has length 25 [2021-06-05 03:40:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:51,226 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4367 transitions. [2021-06-05 03:40:51,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4367 transitions. [2021-06-05 03:40:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:51,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:51,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:51,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-06-05 03:40:51,227 INFO L430 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:51,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1512706499, now seen corresponding path program 622 times [2021-06-05 03:40:51,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:51,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789453004] [2021-06-05 03:40:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:51,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:51,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789453004] [2021-06-05 03:40:51,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789453004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:51,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:51,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:51,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382255236] [2021-06-05 03:40:51,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:51,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:51,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:51,303 INFO L87 Difference]: Start difference. First operand 1136 states and 4367 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:51,363 INFO L93 Difference]: Finished difference Result 2043 states and 7386 transitions. [2021-06-05 03:40:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:51,367 INFO L225 Difference]: With dead ends: 2043 [2021-06-05 03:40:51,367 INFO L226 Difference]: Without dead ends: 1844 [2021-06-05 03:40:51,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-06-05 03:40:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1112. [2021-06-05 03:40:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.8514851485148514) internal successors, (4279), 1111 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4279 transitions. [2021-06-05 03:40:51,391 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4279 transitions. Word has length 25 [2021-06-05 03:40:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:51,391 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4279 transitions. [2021-06-05 03:40:51,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4279 transitions. [2021-06-05 03:40:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:51,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:51,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:51,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-06-05 03:40:51,393 INFO L430 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash 563544735, now seen corresponding path program 623 times [2021-06-05 03:40:51,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:51,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009725336] [2021-06-05 03:40:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:51,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:51,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009725336] [2021-06-05 03:40:51,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009725336] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:51,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:51,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:51,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164278538] [2021-06-05 03:40:51,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:51,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:51,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:51,470 INFO L87 Difference]: Start difference. First operand 1112 states and 4279 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:51,526 INFO L93 Difference]: Finished difference Result 2047 states and 7414 transitions. [2021-06-05 03:40:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:51,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:51,529 INFO L225 Difference]: With dead ends: 2047 [2021-06-05 03:40:51,529 INFO L226 Difference]: Without dead ends: 1864 [2021-06-05 03:40:51,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-06-05 03:40:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1136. [2021-06-05 03:40:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8370044052863435) internal successors, (4355), 1135 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4355 transitions. [2021-06-05 03:40:51,554 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4355 transitions. Word has length 25 [2021-06-05 03:40:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:51,554 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4355 transitions. [2021-06-05 03:40:51,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4355 transitions. [2021-06-05 03:40:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:51,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:51,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:51,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-06-05 03:40:51,555 INFO L430 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:51,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash -283252227, now seen corresponding path program 624 times [2021-06-05 03:40:51,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:51,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146888197] [2021-06-05 03:40:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:51,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:51,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146888197] [2021-06-05 03:40:51,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146888197] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:51,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:51,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:51,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865221563] [2021-06-05 03:40:51,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:51,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:51,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:51,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:51,632 INFO L87 Difference]: Start difference. First operand 1136 states and 4355 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:51,697 INFO L93 Difference]: Finished difference Result 2039 states and 7362 transitions. [2021-06-05 03:40:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:51,700 INFO L225 Difference]: With dead ends: 2039 [2021-06-05 03:40:51,700 INFO L226 Difference]: Without dead ends: 1822 [2021-06-05 03:40:51,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2021-06-05 03:40:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1094. [2021-06-05 03:40:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.8709972552607503) internal successors, (4231), 1093 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4231 transitions. [2021-06-05 03:40:51,724 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4231 transitions. Word has length 25 [2021-06-05 03:40:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:51,724 INFO L482 AbstractCegarLoop]: Abstraction has 1094 states and 4231 transitions. [2021-06-05 03:40:51,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4231 transitions. [2021-06-05 03:40:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:51,726 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:51,726 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:51,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-06-05 03:40:51,726 INFO L430 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1270425503, now seen corresponding path program 625 times [2021-06-05 03:40:51,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:51,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133740515] [2021-06-05 03:40:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:51,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:51,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133740515] [2021-06-05 03:40:51,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133740515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:51,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:51,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:51,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806240116] [2021-06-05 03:40:51,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:51,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:51,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:51,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:51,801 INFO L87 Difference]: Start difference. First operand 1094 states and 4231 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:51,860 INFO L93 Difference]: Finished difference Result 2083 states and 7547 transitions. [2021-06-05 03:40:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:51,864 INFO L225 Difference]: With dead ends: 2083 [2021-06-05 03:40:51,864 INFO L226 Difference]: Without dead ends: 1894 [2021-06-05 03:40:51,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-06-05 03:40:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1124. [2021-06-05 03:40:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 3.85040071237756) internal successors, (4324), 1123 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 4324 transitions. [2021-06-05 03:40:51,889 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 4324 transitions. Word has length 25 [2021-06-05 03:40:51,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:51,889 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 4324 transitions. [2021-06-05 03:40:51,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 4324 transitions. [2021-06-05 03:40:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:51,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:51,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:51,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-06-05 03:40:51,890 INFO L430 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:51,891 INFO L82 PathProgramCache]: Analyzing trace with hash -772911491, now seen corresponding path program 626 times [2021-06-05 03:40:51,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:51,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657574464] [2021-06-05 03:40:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:51,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:51,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657574464] [2021-06-05 03:40:51,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657574464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:51,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:51,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:51,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718025126] [2021-06-05 03:40:51,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:51,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:51,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:51,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:51,968 INFO L87 Difference]: Start difference. First operand 1124 states and 4324 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:52,028 INFO L93 Difference]: Finished difference Result 2081 states and 7512 transitions. [2021-06-05 03:40:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:52,032 INFO L225 Difference]: With dead ends: 2081 [2021-06-05 03:40:52,032 INFO L226 Difference]: Without dead ends: 1864 [2021-06-05 03:40:52,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:52,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-06-05 03:40:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1094. [2021-06-05 03:40:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.858188472095151) internal successors, (4217), 1093 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4217 transitions. [2021-06-05 03:40:52,056 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4217 transitions. Word has length 25 [2021-06-05 03:40:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:52,056 INFO L482 AbstractCegarLoop]: Abstraction has 1094 states and 4217 transitions. [2021-06-05 03:40:52,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4217 transitions. [2021-06-05 03:40:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:52,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:52,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:52,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-06-05 03:40:52,058 INFO L430 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:52,058 INFO L82 PathProgramCache]: Analyzing trace with hash 423628541, now seen corresponding path program 627 times [2021-06-05 03:40:52,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:52,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799917012] [2021-06-05 03:40:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:52,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:52,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799917012] [2021-06-05 03:40:52,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799917012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:52,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:52,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:52,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964413533] [2021-06-05 03:40:52,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:52,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:52,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:52,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:52,133 INFO L87 Difference]: Start difference. First operand 1094 states and 4217 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:52,187 INFO L93 Difference]: Finished difference Result 2077 states and 7514 transitions. [2021-06-05 03:40:52,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:52,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:52,190 INFO L225 Difference]: With dead ends: 2077 [2021-06-05 03:40:52,190 INFO L226 Difference]: Without dead ends: 1888 [2021-06-05 03:40:52,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-06-05 03:40:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1122. [2021-06-05 03:40:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.840321141837645) internal successors, (4305), 1121 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4305 transitions. [2021-06-05 03:40:52,214 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4305 transitions. Word has length 25 [2021-06-05 03:40:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:52,214 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4305 transitions. [2021-06-05 03:40:52,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4305 transitions. [2021-06-05 03:40:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:52,216 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:52,216 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:52,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-06-05 03:40:52,216 INFO L430 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:52,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1616094973, now seen corresponding path program 628 times [2021-06-05 03:40:52,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:52,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016621406] [2021-06-05 03:40:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:52,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:52,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016621406] [2021-06-05 03:40:52,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016621406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:52,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:52,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:52,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754837658] [2021-06-05 03:40:52,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:52,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:52,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:52,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:52,293 INFO L87 Difference]: Start difference. First operand 1122 states and 4305 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:52,349 INFO L93 Difference]: Finished difference Result 2071 states and 7469 transitions. [2021-06-05 03:40:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:52,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:52,353 INFO L225 Difference]: With dead ends: 2071 [2021-06-05 03:40:52,353 INFO L226 Difference]: Without dead ends: 1860 [2021-06-05 03:40:52,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2021-06-05 03:40:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1094. [2021-06-05 03:40:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.8453796889295515) internal successors, (4203), 1093 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4203 transitions. [2021-06-05 03:40:52,377 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4203 transitions. Word has length 25 [2021-06-05 03:40:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:52,377 INFO L482 AbstractCegarLoop]: Abstraction has 1094 states and 4203 transitions. [2021-06-05 03:40:52,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4203 transitions. [2021-06-05 03:40:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:52,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:52,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:52,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-06-05 03:40:52,379 INFO L430 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:52,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1405976155, now seen corresponding path program 629 times [2021-06-05 03:40:52,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:52,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842405890] [2021-06-05 03:40:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:52,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:52,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842405890] [2021-06-05 03:40:52,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842405890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:52,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:52,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:52,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552182021] [2021-06-05 03:40:52,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:52,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:52,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:52,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:52,456 INFO L87 Difference]: Start difference. First operand 1094 states and 4203 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:52,514 INFO L93 Difference]: Finished difference Result 2073 states and 7490 transitions. [2021-06-05 03:40:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:52,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:52,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:52,517 INFO L225 Difference]: With dead ends: 2073 [2021-06-05 03:40:52,517 INFO L226 Difference]: Without dead ends: 1886 [2021-06-05 03:40:52,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-06-05 03:40:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1122. [2021-06-05 03:40:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.8278322925958963) internal successors, (4291), 1121 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4291 transitions. [2021-06-05 03:40:52,542 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4291 transitions. Word has length 25 [2021-06-05 03:40:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:52,542 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4291 transitions. [2021-06-05 03:40:52,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4291 transitions. [2021-06-05 03:40:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:52,544 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:52,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:52,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-06-05 03:40:52,544 INFO L430 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1807928515, now seen corresponding path program 630 times [2021-06-05 03:40:52,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:52,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178343527] [2021-06-05 03:40:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:52,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:52,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178343527] [2021-06-05 03:40:52,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178343527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:52,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:52,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:52,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826420499] [2021-06-05 03:40:52,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:52,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:52,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:52,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:52,620 INFO L87 Difference]: Start difference. First operand 1122 states and 4291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:52,676 INFO L93 Difference]: Finished difference Result 2069 states and 7450 transitions. [2021-06-05 03:40:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:52,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:52,680 INFO L225 Difference]: With dead ends: 2069 [2021-06-05 03:40:52,680 INFO L226 Difference]: Without dead ends: 1844 [2021-06-05 03:40:52,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-06-05 03:40:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1080. [2021-06-05 03:40:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 3.854494902687674) internal successors, (4159), 1079 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4159 transitions. [2021-06-05 03:40:52,704 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4159 transitions. Word has length 25 [2021-06-05 03:40:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:52,705 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 4159 transitions. [2021-06-05 03:40:52,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4159 transitions. [2021-06-05 03:40:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:52,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:52,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:52,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-06-05 03:40:52,706 INFO L430 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:52,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1591582817, now seen corresponding path program 631 times [2021-06-05 03:40:52,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:52,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66234278] [2021-06-05 03:40:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:52,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:52,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66234278] [2021-06-05 03:40:52,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66234278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:52,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:52,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:52,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877520516] [2021-06-05 03:40:52,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:52,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:52,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:52,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:52,783 INFO L87 Difference]: Start difference. First operand 1080 states and 4159 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:52,842 INFO L93 Difference]: Finished difference Result 2170 states and 7829 transitions. [2021-06-05 03:40:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:52,845 INFO L225 Difference]: With dead ends: 2170 [2021-06-05 03:40:52,845 INFO L226 Difference]: Without dead ends: 1981 [2021-06-05 03:40:52,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-06-05 03:40:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1149. [2021-06-05 03:40:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 3.837108013937282) internal successors, (4405), 1148 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 4405 transitions. [2021-06-05 03:40:52,870 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 4405 transitions. Word has length 25 [2021-06-05 03:40:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:52,871 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 4405 transitions. [2021-06-05 03:40:52,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 4405 transitions. [2021-06-05 03:40:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:52,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:52,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:52,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-06-05 03:40:52,872 INFO L430 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 660047485, now seen corresponding path program 632 times [2021-06-05 03:40:52,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:52,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934766662] [2021-06-05 03:40:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:52,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:52,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934766662] [2021-06-05 03:40:52,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934766662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:52,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:52,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:52,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72542256] [2021-06-05 03:40:52,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:52,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:52,950 INFO L87 Difference]: Start difference. First operand 1149 states and 4405 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,009 INFO L93 Difference]: Finished difference Result 2168 states and 7794 transitions. [2021-06-05 03:40:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,012 INFO L225 Difference]: With dead ends: 2168 [2021-06-05 03:40:53,012 INFO L226 Difference]: Without dead ends: 1951 [2021-06-05 03:40:53,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2021-06-05 03:40:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1119. [2021-06-05 03:40:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.8434704830053668) internal successors, (4297), 1118 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 4297 transitions. [2021-06-05 03:40:53,037 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 4297 transitions. Word has length 25 [2021-06-05 03:40:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:53,037 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 4297 transitions. [2021-06-05 03:40:53,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 4297 transitions. [2021-06-05 03:40:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:53,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:53,038 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:53,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-06-05 03:40:53,039 INFO L430 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1165842529, now seen corresponding path program 633 times [2021-06-05 03:40:53,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:53,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960788119] [2021-06-05 03:40:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:53,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:53,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960788119] [2021-06-05 03:40:53,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960788119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:53,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:53,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:53,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512278890] [2021-06-05 03:40:53,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:53,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:53,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:53,115 INFO L87 Difference]: Start difference. First operand 1119 states and 4297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,175 INFO L93 Difference]: Finished difference Result 2176 states and 7827 transitions. [2021-06-05 03:40:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,179 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 03:40:53,179 INFO L226 Difference]: Without dead ends: 1987 [2021-06-05 03:40:53,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-06-05 03:40:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1182. [2021-06-05 03:40:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.8137171888230315) internal successors, (4504), 1181 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4504 transitions. [2021-06-05 03:40:53,204 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4504 transitions. Word has length 25 [2021-06-05 03:40:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:53,204 INFO L482 AbstractCegarLoop]: Abstraction has 1182 states and 4504 transitions. [2021-06-05 03:40:53,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4504 transitions. [2021-06-05 03:40:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:53,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:53,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:53,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-06-05 03:40:53,205 INFO L430 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:53,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1721630817, now seen corresponding path program 634 times [2021-06-05 03:40:53,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:53,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624937441] [2021-06-05 03:40:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:53,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:53,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624937441] [2021-06-05 03:40:53,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624937441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:53,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:53,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:53,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140075563] [2021-06-05 03:40:53,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:53,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:53,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:53,289 INFO L87 Difference]: Start difference. First operand 1182 states and 4504 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,334 INFO L93 Difference]: Finished difference Result 2081 states and 7525 transitions. [2021-06-05 03:40:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,337 INFO L225 Difference]: With dead ends: 2081 [2021-06-05 03:40:53,337 INFO L226 Difference]: Without dead ends: 1796 [2021-06-05 03:40:53,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2021-06-05 03:40:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1119. [2021-06-05 03:40:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.815742397137746) internal successors, (4266), 1118 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 4266 transitions. [2021-06-05 03:40:53,361 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 4266 transitions. Word has length 25 [2021-06-05 03:40:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:53,361 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 4266 transitions. [2021-06-05 03:40:53,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 4266 transitions. [2021-06-05 03:40:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:53,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:53,362 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:53,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-06-05 03:40:53,362 INFO L430 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:53,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:53,363 INFO L82 PathProgramCache]: Analyzing trace with hash -183494915, now seen corresponding path program 635 times [2021-06-05 03:40:53,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:53,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161909912] [2021-06-05 03:40:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:53,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:53,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161909912] [2021-06-05 03:40:53,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161909912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:53,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:53,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:53,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155693182] [2021-06-05 03:40:53,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:53,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:53,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:53,444 INFO L87 Difference]: Start difference. First operand 1119 states and 4266 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,505 INFO L93 Difference]: Finished difference Result 2157 states and 7740 transitions. [2021-06-05 03:40:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,509 INFO L225 Difference]: With dead ends: 2157 [2021-06-05 03:40:53,509 INFO L226 Difference]: Without dead ends: 1970 [2021-06-05 03:40:53,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2021-06-05 03:40:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1165. [2021-06-05 03:40:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 3.799828178694158) internal successors, (4423), 1164 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 4423 transitions. [2021-06-05 03:40:53,535 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 4423 transitions. Word has length 25 [2021-06-05 03:40:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:53,535 INFO L482 AbstractCegarLoop]: Abstraction has 1165 states and 4423 transitions. [2021-06-05 03:40:53,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 4423 transitions. [2021-06-05 03:40:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:53,537 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:53,537 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:53,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-06-05 03:40:53,537 INFO L430 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:53,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1754082783, now seen corresponding path program 636 times [2021-06-05 03:40:53,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:53,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396095408] [2021-06-05 03:40:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:53,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:53,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396095408] [2021-06-05 03:40:53,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396095408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:53,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:53,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:53,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562248829] [2021-06-05 03:40:53,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:53,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:53,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:53,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:53,616 INFO L87 Difference]: Start difference. First operand 1165 states and 4423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,662 INFO L93 Difference]: Finished difference Result 2064 states and 7444 transitions. [2021-06-05 03:40:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,665 INFO L225 Difference]: With dead ends: 2064 [2021-06-05 03:40:53,665 INFO L226 Difference]: Without dead ends: 1757 [2021-06-05 03:40:53,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:53,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-06-05 03:40:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1080. [2021-06-05 03:40:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 3.836886005560704) internal successors, (4140), 1079 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4140 transitions. [2021-06-05 03:40:53,688 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4140 transitions. Word has length 25 [2021-06-05 03:40:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:53,688 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 4140 transitions. [2021-06-05 03:40:53,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4140 transitions. [2021-06-05 03:40:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:53,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:53,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:53,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-06-05 03:40:53,690 INFO L430 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1846636413, now seen corresponding path program 637 times [2021-06-05 03:40:53,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:53,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353447765] [2021-06-05 03:40:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:53,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:53,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353447765] [2021-06-05 03:40:53,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353447765] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:53,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:53,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:53,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647181276] [2021-06-05 03:40:53,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:53,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:53,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:53,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:53,766 INFO L87 Difference]: Start difference. First operand 1080 states and 4140 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,823 INFO L93 Difference]: Finished difference Result 2149 states and 7748 transitions. [2021-06-05 03:40:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,827 INFO L225 Difference]: With dead ends: 2149 [2021-06-05 03:40:53,827 INFO L226 Difference]: Without dead ends: 1960 [2021-06-05 03:40:53,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-06-05 03:40:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1138. [2021-06-05 03:40:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 3.832014072119613) internal successors, (4357), 1137 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 4357 transitions. [2021-06-05 03:40:53,852 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 4357 transitions. Word has length 25 [2021-06-05 03:40:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:53,852 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 4357 transitions. [2021-06-05 03:40:53,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 4357 transitions. [2021-06-05 03:40:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:53,853 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:53,853 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:53,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-06-05 03:40:53,854 INFO L430 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1255864451, now seen corresponding path program 638 times [2021-06-05 03:40:53,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:53,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130870538] [2021-06-05 03:40:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:53,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:53,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130870538] [2021-06-05 03:40:53,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130870538] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:53,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:53,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:53,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288933568] [2021-06-05 03:40:53,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:53,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:53,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:53,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:53,930 INFO L87 Difference]: Start difference. First operand 1138 states and 4357 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:53,989 INFO L93 Difference]: Finished difference Result 2143 states and 7703 transitions. [2021-06-05 03:40:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:53,993 INFO L225 Difference]: With dead ends: 2143 [2021-06-05 03:40:53,993 INFO L226 Difference]: Without dead ends: 1932 [2021-06-05 03:40:53,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2021-06-05 03:40:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1110. [2021-06-05 03:40:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 3.836789900811542) internal successors, (4255), 1109 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4255 transitions. [2021-06-05 03:40:54,017 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4255 transitions. Word has length 25 [2021-06-05 03:40:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:54,017 INFO L482 AbstractCegarLoop]: Abstraction has 1110 states and 4255 transitions. [2021-06-05 03:40:54,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4255 transitions. [2021-06-05 03:40:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:54,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:54,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:54,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-06-05 03:40:54,019 INFO L430 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:54,019 INFO L82 PathProgramCache]: Analyzing trace with hash 536055391, now seen corresponding path program 639 times [2021-06-05 03:40:54,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:54,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899177250] [2021-06-05 03:40:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:54,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:54,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899177250] [2021-06-05 03:40:54,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899177250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:54,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:54,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:54,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71176581] [2021-06-05 03:40:54,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:54,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:54,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:54,100 INFO L87 Difference]: Start difference. First operand 1110 states and 4255 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:54,158 INFO L93 Difference]: Finished difference Result 2161 states and 7766 transitions. [2021-06-05 03:40:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:54,162 INFO L225 Difference]: With dead ends: 2161 [2021-06-05 03:40:54,162 INFO L226 Difference]: Without dead ends: 1972 [2021-06-05 03:40:54,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-06-05 03:40:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1173. [2021-06-05 03:40:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 3.8071672354948807) internal successors, (4462), 1172 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 4462 transitions. [2021-06-05 03:40:54,196 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 4462 transitions. Word has length 25 [2021-06-05 03:40:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:54,196 INFO L482 AbstractCegarLoop]: Abstraction has 1173 states and 4462 transitions. [2021-06-05 03:40:54,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 4462 transitions. [2021-06-05 03:40:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:54,197 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:54,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:54,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-06-05 03:40:54,198 INFO L430 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash 550274941, now seen corresponding path program 640 times [2021-06-05 03:40:54,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:54,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262184719] [2021-06-05 03:40:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:54,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:54,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262184719] [2021-06-05 03:40:54,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262184719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:54,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:54,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:54,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997018740] [2021-06-05 03:40:54,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:54,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:54,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:54,274 INFO L87 Difference]: Start difference. First operand 1173 states and 4462 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:54,318 INFO L93 Difference]: Finished difference Result 2066 states and 7464 transitions. [2021-06-05 03:40:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:54,321 INFO L225 Difference]: With dead ends: 2066 [2021-06-05 03:40:54,321 INFO L226 Difference]: Without dead ends: 1781 [2021-06-05 03:40:54,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-06-05 03:40:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1110. [2021-06-05 03:40:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 3.8097385031559963) internal successors, (4225), 1109 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4225 transitions. [2021-06-05 03:40:54,344 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4225 transitions. Word has length 25 [2021-06-05 03:40:54,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:54,345 INFO L482 AbstractCegarLoop]: Abstraction has 1110 states and 4225 transitions. [2021-06-05 03:40:54,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4225 transitions. [2021-06-05 03:40:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:54,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:54,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:54,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-06-05 03:40:54,346 INFO L430 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1502502781, now seen corresponding path program 641 times [2021-06-05 03:40:54,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:54,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708044910] [2021-06-05 03:40:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:54,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:54,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708044910] [2021-06-05 03:40:54,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708044910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:54,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:54,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:54,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554546394] [2021-06-05 03:40:54,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:54,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:54,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:54,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:54,437 INFO L87 Difference]: Start difference. First operand 1110 states and 4225 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:54,494 INFO L93 Difference]: Finished difference Result 2136 states and 7661 transitions. [2021-06-05 03:40:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:54,497 INFO L225 Difference]: With dead ends: 2136 [2021-06-05 03:40:54,497 INFO L226 Difference]: Without dead ends: 1953 [2021-06-05 03:40:54,498 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-06-05 03:40:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1154. [2021-06-05 03:40:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 3.7961838681699915) internal successors, (4377), 1153 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 4377 transitions. [2021-06-05 03:40:54,522 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 4377 transitions. Word has length 25 [2021-06-05 03:40:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:54,522 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 4377 transitions. [2021-06-05 03:40:54,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 4377 transitions. [2021-06-05 03:40:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:54,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:54,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:54,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-06-05 03:40:54,524 INFO L430 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash 432983775, now seen corresponding path program 642 times [2021-06-05 03:40:54,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:54,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077292577] [2021-06-05 03:40:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:54,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:54,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077292577] [2021-06-05 03:40:54,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077292577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:54,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:54,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:54,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668414360] [2021-06-05 03:40:54,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:54,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:54,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:54,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:54,609 INFO L87 Difference]: Start difference. First operand 1154 states and 4377 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:54,651 INFO L93 Difference]: Finished difference Result 2047 states and 7379 transitions. [2021-06-05 03:40:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:54,654 INFO L225 Difference]: With dead ends: 2047 [2021-06-05 03:40:54,654 INFO L226 Difference]: Without dead ends: 1751 [2021-06-05 03:40:54,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-06-05 03:40:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1080. [2021-06-05 03:40:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 3.822984244670992) internal successors, (4125), 1079 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4125 transitions. [2021-06-05 03:40:54,678 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4125 transitions. Word has length 25 [2021-06-05 03:40:54,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:54,678 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 4125 transitions. [2021-06-05 03:40:54,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4125 transitions. [2021-06-05 03:40:54,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:54,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:54,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:54,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-06-05 03:40:54,679 INFO L430 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:54,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:54,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1475934373, now seen corresponding path program 643 times [2021-06-05 03:40:54,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:54,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212830179] [2021-06-05 03:40:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:54,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:54,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212830179] [2021-06-05 03:40:54,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212830179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:54,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:54,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:54,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050419767] [2021-06-05 03:40:54,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:54,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:54,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:54,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:54,756 INFO L87 Difference]: Start difference. First operand 1080 states and 4125 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:54,814 INFO L93 Difference]: Finished difference Result 2118 states and 7639 transitions. [2021-06-05 03:40:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:54,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:54,818 INFO L225 Difference]: With dead ends: 2118 [2021-06-05 03:40:54,818 INFO L226 Difference]: Without dead ends: 1931 [2021-06-05 03:40:54,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-06-05 03:40:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1130. [2021-06-05 03:40:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.821080602302923) internal successors, (4314), 1129 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 4314 transitions. [2021-06-05 03:40:54,842 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 4314 transitions. Word has length 25 [2021-06-05 03:40:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:54,842 INFO L482 AbstractCegarLoop]: Abstraction has 1130 states and 4314 transitions. [2021-06-05 03:40:54,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 4314 transitions. [2021-06-05 03:40:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:54,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:54,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:54,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-06-05 03:40:54,844 INFO L430 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -394871747, now seen corresponding path program 644 times [2021-06-05 03:40:54,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:54,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586677954] [2021-06-05 03:40:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:54,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:54,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586677954] [2021-06-05 03:40:54,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586677954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:54,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:54,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:54,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640531721] [2021-06-05 03:40:54,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:54,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:54,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:54,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:54,921 INFO L87 Difference]: Start difference. First operand 1130 states and 4314 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:54,979 INFO L93 Difference]: Finished difference Result 2114 states and 7599 transitions. [2021-06-05 03:40:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:54,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:54,983 INFO L225 Difference]: With dead ends: 2114 [2021-06-05 03:40:54,983 INFO L226 Difference]: Without dead ends: 1903 [2021-06-05 03:40:54,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2021-06-05 03:40:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1102. [2021-06-05 03:40:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 3.8256130790190737) internal successors, (4212), 1101 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4212 transitions. [2021-06-05 03:40:55,007 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4212 transitions. Word has length 25 [2021-06-05 03:40:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,007 INFO L482 AbstractCegarLoop]: Abstraction has 1102 states and 4212 transitions. [2021-06-05 03:40:55,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4212 transitions. [2021-06-05 03:40:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,009 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-06-05 03:40:55,009 INFO L430 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1508451901, now seen corresponding path program 645 times [2021-06-05 03:40:55,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309135815] [2021-06-05 03:40:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:55,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:55,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309135815] [2021-06-05 03:40:55,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309135815] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:55,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:55,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:55,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657979457] [2021-06-05 03:40:55,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:55,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:55,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:55,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:55,085 INFO L87 Difference]: Start difference. First operand 1102 states and 4212 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:55,147 INFO L93 Difference]: Finished difference Result 2115 states and 7611 transitions. [2021-06-05 03:40:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:55,150 INFO L225 Difference]: With dead ends: 2115 [2021-06-05 03:40:55,150 INFO L226 Difference]: Without dead ends: 1928 [2021-06-05 03:40:55,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-06-05 03:40:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1148. [2021-06-05 03:40:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.809067131647777) internal successors, (4369), 1147 states have internal predecessors, (4369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4369 transitions. [2021-06-05 03:40:55,175 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4369 transitions. Word has length 25 [2021-06-05 03:40:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,175 INFO L482 AbstractCegarLoop]: Abstraction has 1148 states and 4369 transitions. [2021-06-05 03:40:55,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4369 transitions. [2021-06-05 03:40:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-06-05 03:40:55,177 INFO L430 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,177 INFO L82 PathProgramCache]: Analyzing trace with hash -278929859, now seen corresponding path program 646 times [2021-06-05 03:40:55,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642773786] [2021-06-05 03:40:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:55,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:55,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642773786] [2021-06-05 03:40:55,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642773786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:55,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:55,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:55,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072140012] [2021-06-05 03:40:55,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:55,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:55,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:55,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:55,254 INFO L87 Difference]: Start difference. First operand 1148 states and 4369 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:55,302 INFO L93 Difference]: Finished difference Result 2022 states and 7315 transitions. [2021-06-05 03:40:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:55,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:55,305 INFO L225 Difference]: With dead ends: 2022 [2021-06-05 03:40:55,305 INFO L226 Difference]: Without dead ends: 1754 [2021-06-05 03:40:55,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-06-05 03:40:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1102. [2021-06-05 03:40:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 3.8056312443233424) internal successors, (4190), 1101 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4190 transitions. [2021-06-05 03:40:55,329 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4190 transitions. Word has length 25 [2021-06-05 03:40:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,329 INFO L482 AbstractCegarLoop]: Abstraction has 1102 states and 4190 transitions. [2021-06-05 03:40:55,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4190 transitions. [2021-06-05 03:40:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,330 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-06-05 03:40:55,330 INFO L430 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1896456863, now seen corresponding path program 647 times [2021-06-05 03:40:55,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156286333] [2021-06-05 03:40:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:55,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:55,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156286333] [2021-06-05 03:40:55,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156286333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:55,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:55,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:55,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767887427] [2021-06-05 03:40:55,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:55,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:55,418 INFO L87 Difference]: Start difference. First operand 1102 states and 4190 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:55,479 INFO L93 Difference]: Finished difference Result 2109 states and 7570 transitions. [2021-06-05 03:40:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:55,483 INFO L225 Difference]: With dead ends: 2109 [2021-06-05 03:40:55,483 INFO L226 Difference]: Without dead ends: 1926 [2021-06-05 03:40:55,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-06-05 03:40:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1146. [2021-06-05 03:40:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 3.7921397379912665) internal successors, (4342), 1145 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4342 transitions. [2021-06-05 03:40:55,507 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4342 transitions. Word has length 25 [2021-06-05 03:40:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,507 INFO L482 AbstractCegarLoop]: Abstraction has 1146 states and 4342 transitions. [2021-06-05 03:40:55,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4342 transitions. [2021-06-05 03:40:55,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-06-05 03:40:55,509 INFO L430 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1193861251, now seen corresponding path program 648 times [2021-06-05 03:40:55,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882047340] [2021-06-05 03:40:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:55,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:55,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882047340] [2021-06-05 03:40:55,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882047340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:55,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:55,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:55,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842260698] [2021-06-05 03:40:55,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:55,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:55,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:55,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:55,597 INFO L87 Difference]: Start difference. First operand 1146 states and 4342 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:55,642 INFO L93 Difference]: Finished difference Result 2020 states and 7288 transitions. [2021-06-05 03:40:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:55,646 INFO L225 Difference]: With dead ends: 2020 [2021-06-05 03:40:55,646 INFO L226 Difference]: Without dead ends: 1709 [2021-06-05 03:40:55,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-06-05 03:40:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1057. [2021-06-05 03:40:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 3.847537878787879) internal successors, (4063), 1056 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4063 transitions. [2021-06-05 03:40:55,668 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4063 transitions. Word has length 25 [2021-06-05 03:40:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,668 INFO L482 AbstractCegarLoop]: Abstraction has 1057 states and 4063 transitions. [2021-06-05 03:40:55,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4063 transitions. [2021-06-05 03:40:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,669 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-06-05 03:40:55,670 INFO L430 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1725712387, now seen corresponding path program 649 times [2021-06-05 03:40:55,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234221578] [2021-06-05 03:40:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:55,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:55,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234221578] [2021-06-05 03:40:55,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234221578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:55,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:55,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:55,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004646979] [2021-06-05 03:40:55,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:55,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:55,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:55,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:55,744 INFO L87 Difference]: Start difference. First operand 1057 states and 4063 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:55,800 INFO L93 Difference]: Finished difference Result 2000 states and 7196 transitions. [2021-06-05 03:40:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:55,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:55,804 INFO L225 Difference]: With dead ends: 2000 [2021-06-05 03:40:55,804 INFO L226 Difference]: Without dead ends: 1811 [2021-06-05 03:40:55,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-06-05 03:40:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1087. [2021-06-05 03:40:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 3.826887661141805) internal successors, (4156), 1086 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 4156 transitions. [2021-06-05 03:40:55,827 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 4156 transitions. Word has length 25 [2021-06-05 03:40:55,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,827 INFO L482 AbstractCegarLoop]: Abstraction has 1087 states and 4156 transitions. [2021-06-05 03:40:55,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 4156 transitions. [2021-06-05 03:40:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,828 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-06-05 03:40:55,829 INFO L430 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,829 INFO L82 PathProgramCache]: Analyzing trace with hash 525917915, now seen corresponding path program 650 times [2021-06-05 03:40:55,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773772084] [2021-06-05 03:40:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:55,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:55,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773772084] [2021-06-05 03:40:55,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773772084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:55,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:55,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:55,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223132929] [2021-06-05 03:40:55,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:55,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:55,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:55,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:55,904 INFO L87 Difference]: Start difference. First operand 1087 states and 4156 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:55,963 INFO L93 Difference]: Finished difference Result 1998 states and 7161 transitions. [2021-06-05 03:40:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:55,966 INFO L225 Difference]: With dead ends: 1998 [2021-06-05 03:40:55,967 INFO L226 Difference]: Without dead ends: 1781 [2021-06-05 03:40:55,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-06-05 03:40:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1057. [2021-06-05 03:40:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 3.836174242424242) internal successors, (4051), 1056 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4051 transitions. [2021-06-05 03:40:55,989 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4051 transitions. Word has length 25 [2021-06-05 03:40:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:55,989 INFO L482 AbstractCegarLoop]: Abstraction has 1057 states and 4051 transitions. [2021-06-05 03:40:55,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4051 transitions. [2021-06-05 03:40:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:55,991 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:55,991 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:55,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-06-05 03:40:55,991 INFO L430 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:55,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1773228029, now seen corresponding path program 651 times [2021-06-05 03:40:55,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:55,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856616904] [2021-06-05 03:40:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:56,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:56,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856616904] [2021-06-05 03:40:56,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856616904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:56,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:56,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:56,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853532570] [2021-06-05 03:40:56,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:56,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:56,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:56,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:56,076 INFO L87 Difference]: Start difference. First operand 1057 states and 4051 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:56,134 INFO L93 Difference]: Finished difference Result 1982 states and 7121 transitions. [2021-06-05 03:40:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:56,138 INFO L225 Difference]: With dead ends: 1982 [2021-06-05 03:40:56,138 INFO L226 Difference]: Without dead ends: 1793 [2021-06-05 03:40:56,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-06-05 03:40:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1081. [2021-06-05 03:40:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 3.821296296296296) internal successors, (4127), 1080 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 4127 transitions. [2021-06-05 03:40:56,161 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 4127 transitions. Word has length 25 [2021-06-05 03:40:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:56,161 INFO L482 AbstractCegarLoop]: Abstraction has 1081 states and 4127 transitions. [2021-06-05 03:40:56,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 4127 transitions. [2021-06-05 03:40:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:56,162 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:56,162 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:56,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-06-05 03:40:56,162 INFO L430 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:56,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:56,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1965950979, now seen corresponding path program 652 times [2021-06-05 03:40:56,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:56,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227600096] [2021-06-05 03:40:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:56,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:56,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227600096] [2021-06-05 03:40:56,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227600096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:56,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:56,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:56,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130170377] [2021-06-05 03:40:56,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:56,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:56,247 INFO L87 Difference]: Start difference. First operand 1081 states and 4127 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:56,306 INFO L93 Difference]: Finished difference Result 1968 states and 7052 transitions. [2021-06-05 03:40:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:56,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:56,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:56,310 INFO L225 Difference]: With dead ends: 1968 [2021-06-05 03:40:56,310 INFO L226 Difference]: Without dead ends: 1769 [2021-06-05 03:40:56,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-06-05 03:40:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1057. [2021-06-05 03:40:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 3.824810606060606) internal successors, (4039), 1056 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4039 transitions. [2021-06-05 03:40:56,332 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4039 transitions. Word has length 25 [2021-06-05 03:40:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:56,333 INFO L482 AbstractCegarLoop]: Abstraction has 1057 states and 4039 transitions. [2021-06-05 03:40:56,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4039 transitions. [2021-06-05 03:40:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:56,334 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:56,334 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:56,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-06-05 03:40:56,334 INFO L430 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:56,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1539391653, now seen corresponding path program 653 times [2021-06-05 03:40:56,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:56,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421788458] [2021-06-05 03:40:56,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:56,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:56,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421788458] [2021-06-05 03:40:56,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421788458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:56,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:56,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:56,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306841962] [2021-06-05 03:40:56,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:56,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:56,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:56,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:56,410 INFO L87 Difference]: Start difference. First operand 1057 states and 4039 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:56,468 INFO L93 Difference]: Finished difference Result 1978 states and 7099 transitions. [2021-06-05 03:40:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:56,471 INFO L225 Difference]: With dead ends: 1978 [2021-06-05 03:40:56,471 INFO L226 Difference]: Without dead ends: 1791 [2021-06-05 03:40:56,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-06-05 03:40:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1081. [2021-06-05 03:40:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 3.810185185185185) internal successors, (4115), 1080 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 4115 transitions. [2021-06-05 03:40:56,494 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 4115 transitions. Word has length 25 [2021-06-05 03:40:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:56,494 INFO L482 AbstractCegarLoop]: Abstraction has 1081 states and 4115 transitions. [2021-06-05 03:40:56,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 4115 transitions. [2021-06-05 03:40:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:56,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:56,496 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:56,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-06-05 03:40:56,496 INFO L430 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1746199619, now seen corresponding path program 654 times [2021-06-05 03:40:56,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:56,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062897845] [2021-06-05 03:40:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:56,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:56,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062897845] [2021-06-05 03:40:56,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062897845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:56,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:56,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:56,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034210839] [2021-06-05 03:40:56,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:56,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:56,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:56,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:56,571 INFO L87 Difference]: Start difference. First operand 1081 states and 4115 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:56,627 INFO L93 Difference]: Finished difference Result 1966 states and 7035 transitions. [2021-06-05 03:40:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:56,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:56,630 INFO L225 Difference]: With dead ends: 1966 [2021-06-05 03:40:56,630 INFO L226 Difference]: Without dead ends: 1755 [2021-06-05 03:40:56,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-06-05 03:40:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1045. [2021-06-05 03:40:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 3.832375478927203) internal successors, (4001), 1044 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 4001 transitions. [2021-06-05 03:40:56,666 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 4001 transitions. Word has length 25 [2021-06-05 03:40:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:56,666 INFO L482 AbstractCegarLoop]: Abstraction has 1045 states and 4001 transitions. [2021-06-05 03:40:56,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 4001 transitions. [2021-06-05 03:40:56,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:56,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:56,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:56,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-06-05 03:40:56,668 INFO L430 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1834794719, now seen corresponding path program 655 times [2021-06-05 03:40:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:56,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375084859] [2021-06-05 03:40:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:56,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:56,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375084859] [2021-06-05 03:40:56,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375084859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:56,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:56,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:56,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886578097] [2021-06-05 03:40:56,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:56,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:56,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:56,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:56,744 INFO L87 Difference]: Start difference. First operand 1045 states and 4001 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:56,800 INFO L93 Difference]: Finished difference Result 2066 states and 7395 transitions. [2021-06-05 03:40:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:56,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:56,804 INFO L225 Difference]: With dead ends: 2066 [2021-06-05 03:40:56,804 INFO L226 Difference]: Without dead ends: 1877 [2021-06-05 03:40:56,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2021-06-05 03:40:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1045. [2021-06-05 03:40:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 3.803639846743295) internal successors, (3971), 1044 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 3971 transitions. [2021-06-05 03:40:56,827 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 3971 transitions. Word has length 25 [2021-06-05 03:40:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:56,828 INFO L482 AbstractCegarLoop]: Abstraction has 1045 states and 3971 transitions. [2021-06-05 03:40:56,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 3971 transitions. [2021-06-05 03:40:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:56,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:56,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:56,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-06-05 03:40:56,829 INFO L430 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:56,829 INFO L82 PathProgramCache]: Analyzing trace with hash -208542275, now seen corresponding path program 656 times [2021-06-05 03:40:56,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:56,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257471252] [2021-06-05 03:40:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:56,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:56,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257471252] [2021-06-05 03:40:56,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257471252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:56,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:56,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:56,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835269630] [2021-06-05 03:40:56,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:56,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:56,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:56,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:56,905 INFO L87 Difference]: Start difference. First operand 1045 states and 3971 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:56,965 INFO L93 Difference]: Finished difference Result 2064 states and 7360 transitions. [2021-06-05 03:40:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:56,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:56,969 INFO L225 Difference]: With dead ends: 2064 [2021-06-05 03:40:56,969 INFO L226 Difference]: Without dead ends: 1847 [2021-06-05 03:40:56,969 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2021-06-05 03:40:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1015. [2021-06-05 03:40:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 3.809664694280079) internal successors, (3863), 1014 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 3863 transitions. [2021-06-05 03:40:56,991 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 3863 transitions. Word has length 25 [2021-06-05 03:40:56,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:56,991 INFO L482 AbstractCegarLoop]: Abstraction has 1015 states and 3863 transitions. [2021-06-05 03:40:56,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:56,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 3863 transitions. [2021-06-05 03:40:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:56,993 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:56,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:56,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-06-05 03:40:56,993 INFO L430 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash 292204541, now seen corresponding path program 657 times [2021-06-05 03:40:56,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:56,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748495199] [2021-06-05 03:40:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:57,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:57,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748495199] [2021-06-05 03:40:57,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748495199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:57,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:57,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:57,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967846205] [2021-06-05 03:40:57,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:57,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:57,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:57,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:57,074 INFO L87 Difference]: Start difference. First operand 1015 states and 3863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:57,131 INFO L93 Difference]: Finished difference Result 2072 states and 7393 transitions. [2021-06-05 03:40:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:57,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:57,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:57,135 INFO L225 Difference]: With dead ends: 2072 [2021-06-05 03:40:57,135 INFO L226 Difference]: Without dead ends: 1883 [2021-06-05 03:40:57,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:57,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-06-05 03:40:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1078. [2021-06-05 03:40:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 3.7790157845868153) internal successors, (4070), 1077 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 4070 transitions. [2021-06-05 03:40:57,158 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 4070 transitions. Word has length 25 [2021-06-05 03:40:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:57,158 INFO L482 AbstractCegarLoop]: Abstraction has 1078 states and 4070 transitions. [2021-06-05 03:40:57,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 4070 transitions. [2021-06-05 03:40:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:57,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:57,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:57,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-06-05 03:40:57,160 INFO L430 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:57,160 INFO L82 PathProgramCache]: Analyzing trace with hash -263583747, now seen corresponding path program 658 times [2021-06-05 03:40:57,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:57,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563691154] [2021-06-05 03:40:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:57,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:57,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563691154] [2021-06-05 03:40:57,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563691154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:57,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:57,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:57,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120813861] [2021-06-05 03:40:57,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:57,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:57,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:57,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:57,239 INFO L87 Difference]: Start difference. First operand 1078 states and 4070 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:57,286 INFO L93 Difference]: Finished difference Result 1977 states and 7091 transitions. [2021-06-05 03:40:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:57,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:57,290 INFO L225 Difference]: With dead ends: 1977 [2021-06-05 03:40:57,290 INFO L226 Difference]: Without dead ends: 1692 [2021-06-05 03:40:57,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-06-05 03:40:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1015. [2021-06-05 03:40:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 3.7790927021696255) internal successors, (3832), 1014 states have internal predecessors, (3832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 3832 transitions. [2021-06-05 03:40:57,312 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 3832 transitions. Word has length 25 [2021-06-05 03:40:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:57,312 INFO L482 AbstractCegarLoop]: Abstraction has 1015 states and 3832 transitions. [2021-06-05 03:40:57,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 3832 transitions. [2021-06-05 03:40:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:57,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:57,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:57,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-06-05 03:40:57,313 INFO L430 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1274552155, now seen corresponding path program 659 times [2021-06-05 03:40:57,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:57,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062707242] [2021-06-05 03:40:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:57,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:57,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062707242] [2021-06-05 03:40:57,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062707242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:57,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:57,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:57,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170611011] [2021-06-05 03:40:57,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:57,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:57,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:57,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:57,390 INFO L87 Difference]: Start difference. First operand 1015 states and 3832 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:57,475 INFO L93 Difference]: Finished difference Result 2053 states and 7306 transitions. [2021-06-05 03:40:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:57,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:57,479 INFO L225 Difference]: With dead ends: 2053 [2021-06-05 03:40:57,480 INFO L226 Difference]: Without dead ends: 1866 [2021-06-05 03:40:57,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-06-05 03:40:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1061. [2021-06-05 03:40:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 3.763207547169811) internal successors, (3989), 1060 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 3989 transitions. [2021-06-05 03:40:57,513 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 3989 transitions. Word has length 25 [2021-06-05 03:40:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:57,513 INFO L482 AbstractCegarLoop]: Abstraction has 1061 states and 3989 transitions. [2021-06-05 03:40:57,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 3989 transitions. [2021-06-05 03:40:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:57,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:57,515 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:57,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-06-05 03:40:57,515 INFO L430 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:57,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:57,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1082837443, now seen corresponding path program 660 times [2021-06-05 03:40:57,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:57,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455291339] [2021-06-05 03:40:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:57,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:57,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455291339] [2021-06-05 03:40:57,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455291339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:57,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:57,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:57,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39003566] [2021-06-05 03:40:57,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:57,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:57,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:57,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:57,616 INFO L87 Difference]: Start difference. First operand 1061 states and 3989 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:57,678 INFO L93 Difference]: Finished difference Result 1960 states and 7010 transitions. [2021-06-05 03:40:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:57,682 INFO L225 Difference]: With dead ends: 1960 [2021-06-05 03:40:57,682 INFO L226 Difference]: Without dead ends: 1653 [2021-06-05 03:40:57,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-06-05 03:40:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 976. [2021-06-05 03:40:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 3.802051282051282) internal successors, (3707), 975 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3707 transitions. [2021-06-05 03:40:57,705 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 3707 transitions. Word has length 25 [2021-06-05 03:40:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:57,705 INFO L482 AbstractCegarLoop]: Abstraction has 976 states and 3707 transitions. [2021-06-05 03:40:57,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 3707 transitions. [2021-06-05 03:40:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:57,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:57,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:57,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-06-05 03:40:57,706 INFO L430 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:57,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1407215619, now seen corresponding path program 661 times [2021-06-05 03:40:57,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:57,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634874097] [2021-06-05 03:40:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:57,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:57,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634874097] [2021-06-05 03:40:57,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634874097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:57,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:57,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:57,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259904307] [2021-06-05 03:40:57,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:57,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:57,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:57,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:57,800 INFO L87 Difference]: Start difference. First operand 976 states and 3707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:57,859 INFO L93 Difference]: Finished difference Result 1957 states and 6997 transitions. [2021-06-05 03:40:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:57,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:57,863 INFO L225 Difference]: With dead ends: 1957 [2021-06-05 03:40:57,863 INFO L226 Difference]: Without dead ends: 1768 [2021-06-05 03:40:57,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-06-05 03:40:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1028. [2021-06-05 03:40:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 3.8003894839337877) internal successors, (3903), 1027 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 3903 transitions. [2021-06-05 03:40:57,885 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 3903 transitions. Word has length 25 [2021-06-05 03:40:57,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:57,885 INFO L482 AbstractCegarLoop]: Abstraction has 1028 states and 3903 transitions. [2021-06-05 03:40:57,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:57,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 3903 transitions. [2021-06-05 03:40:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:57,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:57,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:57,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-06-05 03:40:57,887 INFO L430 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:57,887 INFO L82 PathProgramCache]: Analyzing trace with hash -851427331, now seen corresponding path program 662 times [2021-06-05 03:40:57,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:57,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912132951] [2021-06-05 03:40:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:57,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:57,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912132951] [2021-06-05 03:40:57,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912132951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:57,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:57,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:57,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429671453] [2021-06-05 03:40:57,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:57,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:57,996 INFO L87 Difference]: Start difference. First operand 1028 states and 3903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:58,064 INFO L93 Difference]: Finished difference Result 1943 states and 6928 transitions. [2021-06-05 03:40:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:58,069 INFO L225 Difference]: With dead ends: 1943 [2021-06-05 03:40:58,069 INFO L226 Difference]: Without dead ends: 1744 [2021-06-05 03:40:58,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-06-05 03:40:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1004. [2021-06-05 03:40:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.8035892323030907) internal successors, (3815), 1003 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3815 transitions. [2021-06-05 03:40:58,100 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3815 transitions. Word has length 25 [2021-06-05 03:40:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:58,100 INFO L482 AbstractCegarLoop]: Abstraction has 1004 states and 3815 transitions. [2021-06-05 03:40:58,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3815 transitions. [2021-06-05 03:40:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:58,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:58,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:58,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-06-05 03:40:58,102 INFO L430 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2024738977, now seen corresponding path program 663 times [2021-06-05 03:40:58,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:58,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662620385] [2021-06-05 03:40:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:58,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:58,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662620385] [2021-06-05 03:40:58,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662620385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:58,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:58,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:58,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831334309] [2021-06-05 03:40:58,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:58,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:58,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:58,210 INFO L87 Difference]: Start difference. First operand 1004 states and 3815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:58,275 INFO L93 Difference]: Finished difference Result 1918 states and 6823 transitions. [2021-06-05 03:40:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:58,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:58,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:58,279 INFO L225 Difference]: With dead ends: 1918 [2021-06-05 03:40:58,279 INFO L226 Difference]: Without dead ends: 1729 [2021-06-05 03:40:58,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-06-05 03:40:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1067. [2021-06-05 03:40:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 3.772983114446529) internal successors, (4022), 1066 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 4022 transitions. [2021-06-05 03:40:58,310 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 4022 transitions. Word has length 25 [2021-06-05 03:40:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:58,310 INFO L482 AbstractCegarLoop]: Abstraction has 1067 states and 4022 transitions. [2021-06-05 03:40:58,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 4022 transitions. [2021-06-05 03:40:58,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:58,312 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:58,312 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:58,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-06-05 03:40:58,313 INFO L430 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash -741236739, now seen corresponding path program 664 times [2021-06-05 03:40:58,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:58,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653706120] [2021-06-05 03:40:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:58,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:58,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653706120] [2021-06-05 03:40:58,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653706120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:58,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:58,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:58,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640919414] [2021-06-05 03:40:58,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:58,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:58,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:58,400 INFO L87 Difference]: Start difference. First operand 1067 states and 4022 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:58,441 INFO L93 Difference]: Finished difference Result 1823 states and 6521 transitions. [2021-06-05 03:40:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:58,444 INFO L225 Difference]: With dead ends: 1823 [2021-06-05 03:40:58,444 INFO L226 Difference]: Without dead ends: 1538 [2021-06-05 03:40:58,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-06-05 03:40:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1004. [2021-06-05 03:40:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.7756729810568297) internal successors, (3787), 1003 states have internal predecessors, (3787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3787 transitions. [2021-06-05 03:40:58,464 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3787 transitions. Word has length 25 [2021-06-05 03:40:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:58,464 INFO L482 AbstractCegarLoop]: Abstraction has 1004 states and 3787 transitions. [2021-06-05 03:40:58,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3787 transitions. [2021-06-05 03:40:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:58,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:58,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:58,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-06-05 03:40:58,466 INFO L430 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1906939901, now seen corresponding path program 665 times [2021-06-05 03:40:58,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:58,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694651217] [2021-06-05 03:40:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:58,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:58,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694651217] [2021-06-05 03:40:58,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694651217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:58,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:58,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:58,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263129216] [2021-06-05 03:40:58,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:58,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:58,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:58,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:58,581 INFO L87 Difference]: Start difference. First operand 1004 states and 3787 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:58,645 INFO L93 Difference]: Finished difference Result 1753 states and 6291 transitions. [2021-06-05 03:40:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:58,649 INFO L225 Difference]: With dead ends: 1753 [2021-06-05 03:40:58,649 INFO L226 Difference]: Without dead ends: 1578 [2021-06-05 03:40:58,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-06-05 03:40:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1044. [2021-06-05 03:40:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1043 states have (on average 3.7651006711409396) internal successors, (3927), 1043 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 3927 transitions. [2021-06-05 03:40:58,680 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 3927 transitions. Word has length 25 [2021-06-05 03:40:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:58,680 INFO L482 AbstractCegarLoop]: Abstraction has 1044 states and 3927 transitions. [2021-06-05 03:40:58,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 3927 transitions. [2021-06-05 03:40:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:58,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:58,682 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:58,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-06-05 03:40:58,682 INFO L430 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 2125291487, now seen corresponding path program 666 times [2021-06-05 03:40:58,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:58,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888614019] [2021-06-05 03:40:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:58,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:58,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888614019] [2021-06-05 03:40:58,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888614019] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:58,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:58,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:58,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550182269] [2021-06-05 03:40:58,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:58,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:58,794 INFO L87 Difference]: Start difference. First operand 1044 states and 3927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:58,841 INFO L93 Difference]: Finished difference Result 1577 states and 5706 transitions. [2021-06-05 03:40:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:58,844 INFO L225 Difference]: With dead ends: 1577 [2021-06-05 03:40:58,844 INFO L226 Difference]: Without dead ends: 1287 [2021-06-05 03:40:58,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-06-05 03:40:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 976. [2021-06-05 03:40:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 3.787692307692308) internal successors, (3693), 975 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3693 transitions. [2021-06-05 03:40:58,873 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 3693 transitions. Word has length 25 [2021-06-05 03:40:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:58,873 INFO L482 AbstractCegarLoop]: Abstraction has 976 states and 3693 transitions. [2021-06-05 03:40:58,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:58,873 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 3693 transitions. [2021-06-05 03:40:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:58,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:58,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:58,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-06-05 03:40:58,874 INFO L430 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:58,875 INFO L82 PathProgramCache]: Analyzing trace with hash -434819109, now seen corresponding path program 667 times [2021-06-05 03:40:58,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:58,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566837049] [2021-06-05 03:40:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:58,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:58,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566837049] [2021-06-05 03:40:58,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566837049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:58,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:58,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:58,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714202442] [2021-06-05 03:40:58,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:58,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:58,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:58,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:58,950 INFO L87 Difference]: Start difference. First operand 976 states and 3693 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,003 INFO L93 Difference]: Finished difference Result 1928 states and 6894 transitions. [2021-06-05 03:40:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,006 INFO L225 Difference]: With dead ends: 1928 [2021-06-05 03:40:59,007 INFO L226 Difference]: Without dead ends: 1741 [2021-06-05 03:40:59,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-06-05 03:40:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1020. [2021-06-05 03:40:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 3.78900883218842) internal successors, (3861), 1019 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 3861 transitions. [2021-06-05 03:40:59,029 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 3861 transitions. Word has length 25 [2021-06-05 03:40:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,029 INFO L482 AbstractCegarLoop]: Abstraction has 1020 states and 3861 transitions. [2021-06-05 03:40:59,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 3861 transitions. [2021-06-05 03:40:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-06-05 03:40:59,030 INFO L430 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash -641627075, now seen corresponding path program 668 times [2021-06-05 03:40:59,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842333527] [2021-06-05 03:40:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:59,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:59,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842333527] [2021-06-05 03:40:59,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842333527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:59,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:59,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:59,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091830310] [2021-06-05 03:40:59,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:59,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:59,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:59,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:59,107 INFO L87 Difference]: Start difference. First operand 1020 states and 3861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,163 INFO L93 Difference]: Finished difference Result 1916 states and 6830 transitions. [2021-06-05 03:40:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,166 INFO L225 Difference]: With dead ends: 1916 [2021-06-05 03:40:59,166 INFO L226 Difference]: Without dead ends: 1717 [2021-06-05 03:40:59,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2021-06-05 03:40:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 996. [2021-06-05 03:40:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.791959798994975) internal successors, (3773), 995 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3773 transitions. [2021-06-05 03:40:59,188 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3773 transitions. Word has length 25 [2021-06-05 03:40:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,188 INFO L482 AbstractCegarLoop]: Abstraction has 996 states and 3773 transitions. [2021-06-05 03:40:59,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3773 transitions. [2021-06-05 03:40:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-06-05 03:40:59,189 INFO L430 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1052342467, now seen corresponding path program 669 times [2021-06-05 03:40:59,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523808194] [2021-06-05 03:40:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:59,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:59,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523808194] [2021-06-05 03:40:59,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523808194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:59,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:59,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:59,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511531964] [2021-06-05 03:40:59,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:59,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:59,265 INFO L87 Difference]: Start difference. First operand 996 states and 3773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,318 INFO L93 Difference]: Finished difference Result 1891 states and 6725 transitions. [2021-06-05 03:40:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,321 INFO L225 Difference]: With dead ends: 1891 [2021-06-05 03:40:59,322 INFO L226 Difference]: Without dead ends: 1704 [2021-06-05 03:40:59,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-06-05 03:40:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1042. [2021-06-05 03:40:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1041 states have (on average 3.7752161383285303) internal successors, (3930), 1041 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 3930 transitions. [2021-06-05 03:40:59,343 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 3930 transitions. Word has length 25 [2021-06-05 03:40:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,343 INFO L482 AbstractCegarLoop]: Abstraction has 1042 states and 3930 transitions. [2021-06-05 03:40:59,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 3930 transitions. [2021-06-05 03:40:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-06-05 03:40:59,344 INFO L430 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1570441539, now seen corresponding path program 670 times [2021-06-05 03:40:59,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836149762] [2021-06-05 03:40:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:59,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:59,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836149762] [2021-06-05 03:40:59,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836149762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:59,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:59,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:59,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348814634] [2021-06-05 03:40:59,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:59,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:59,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:59,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:59,421 INFO L87 Difference]: Start difference. First operand 1042 states and 3930 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,486 INFO L93 Difference]: Finished difference Result 1798 states and 6429 transitions. [2021-06-05 03:40:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,489 INFO L225 Difference]: With dead ends: 1798 [2021-06-05 03:40:59,489 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 03:40:59,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 03:40:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 996. [2021-06-05 03:40:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.771859296482412) internal successors, (3753), 995 states have internal predecessors, (3753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3753 transitions. [2021-06-05 03:40:59,509 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3753 transitions. Word has length 25 [2021-06-05 03:40:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,509 INFO L482 AbstractCegarLoop]: Abstraction has 996 states and 3753 transitions. [2021-06-05 03:40:59,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3753 transitions. [2021-06-05 03:40:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,511 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-06-05 03:40:59,511 INFO L430 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1649701535, now seen corresponding path program 671 times [2021-06-05 03:40:59,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235534788] [2021-06-05 03:40:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:59,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:59,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235534788] [2021-06-05 03:40:59,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235534788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:59,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:59,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:59,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677741481] [2021-06-05 03:40:59,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:59,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:59,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:59,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:59,597 INFO L87 Difference]: Start difference. First operand 996 states and 3753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,649 INFO L93 Difference]: Finished difference Result 1745 states and 6257 transitions. [2021-06-05 03:40:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,652 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 03:40:59,652 INFO L226 Difference]: Without dead ends: 1570 [2021-06-05 03:40:59,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-06-05 03:40:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1036. [2021-06-05 03:40:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 3.761352657004831) internal successors, (3893), 1035 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 3893 transitions. [2021-06-05 03:40:59,672 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 3893 transitions. Word has length 25 [2021-06-05 03:40:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,672 INFO L482 AbstractCegarLoop]: Abstraction has 1036 states and 3893 transitions. [2021-06-05 03:40:59,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 3893 transitions. [2021-06-05 03:40:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,674 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-06-05 03:40:59,674 INFO L430 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash -171333891, now seen corresponding path program 672 times [2021-06-05 03:40:59,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301007978] [2021-06-05 03:40:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:59,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:59,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301007978] [2021-06-05 03:40:59,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301007978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:59,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:59,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:59,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376703611] [2021-06-05 03:40:59,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:59,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:59,760 INFO L87 Difference]: Start difference. First operand 1036 states and 3893 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,797 INFO L93 Difference]: Finished difference Result 1569 states and 5672 transitions. [2021-06-05 03:40:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,799 INFO L225 Difference]: With dead ends: 1569 [2021-06-05 03:40:59,799 INFO L226 Difference]: Without dead ends: 1269 [2021-06-05 03:40:59,799 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-06-05 03:40:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 958. [2021-06-05 03:40:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.806687565308255) internal successors, (3643), 957 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3643 transitions. [2021-06-05 03:40:59,817 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3643 transitions. Word has length 25 [2021-06-05 03:40:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,818 INFO L482 AbstractCegarLoop]: Abstraction has 958 states and 3643 transitions. [2021-06-05 03:40:59,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3643 transitions. [2021-06-05 03:40:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-06-05 03:40:59,819 INFO L430 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,819 INFO L82 PathProgramCache]: Analyzing trace with hash 739430491, now seen corresponding path program 673 times [2021-06-05 03:40:59,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197251266] [2021-06-05 03:40:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:40:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:40:59,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:40:59,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197251266] [2021-06-05 03:40:59,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197251266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:40:59,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:40:59,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:40:59,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770769020] [2021-06-05 03:40:59,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:40:59,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:40:59,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:40:59,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:40:59,893 INFO L87 Difference]: Start difference. First operand 958 states and 3643 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:40:59,945 INFO L93 Difference]: Finished difference Result 1805 states and 6424 transitions. [2021-06-05 03:40:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:40:59,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:40:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:40:59,948 INFO L225 Difference]: With dead ends: 1805 [2021-06-05 03:40:59,948 INFO L226 Difference]: Without dead ends: 1616 [2021-06-05 03:40:59,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:40:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-06-05 03:40:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 986. [2021-06-05 03:40:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 985 states have (on average 3.7878172588832486) internal successors, (3731), 985 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 3731 transitions. [2021-06-05 03:40:59,969 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 3731 transitions. Word has length 25 [2021-06-05 03:40:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:40:59,969 INFO L482 AbstractCegarLoop]: Abstraction has 986 states and 3731 transitions. [2021-06-05 03:40:59,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:40:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 3731 transitions. [2021-06-05 03:40:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:40:59,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:40:59,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:40:59,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-06-05 03:40:59,970 INFO L430 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:40:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:40:59,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1931896923, now seen corresponding path program 674 times [2021-06-05 03:40:59,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:40:59,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726264906] [2021-06-05 03:40:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:40:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726264906] [2021-06-05 03:41:00,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726264906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114559773] [2021-06-05 03:41:00,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,044 INFO L87 Difference]: Start difference. First operand 986 states and 3731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:00,096 INFO L93 Difference]: Finished difference Result 1799 states and 6379 transitions. [2021-06-05 03:41:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:00,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:00,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:00,099 INFO L225 Difference]: With dead ends: 1799 [2021-06-05 03:41:00,099 INFO L226 Difference]: Without dead ends: 1588 [2021-06-05 03:41:00,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-06-05 03:41:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 958. [2021-06-05 03:41:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.794148380355277) internal successors, (3631), 957 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3631 transitions. [2021-06-05 03:41:00,119 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3631 transitions. Word has length 25 [2021-06-05 03:41:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:00,119 INFO L482 AbstractCegarLoop]: Abstraction has 958 states and 3631 transitions. [2021-06-05 03:41:00,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3631 transitions. [2021-06-05 03:41:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:00,120 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:00,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:00,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-06-05 03:41:00,120 INFO L430 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash 258528445, now seen corresponding path program 675 times [2021-06-05 03:41:00,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:00,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786658762] [2021-06-05 03:41:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786658762] [2021-06-05 03:41:00,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786658762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282981045] [2021-06-05 03:41:00,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,206 INFO L87 Difference]: Start difference. First operand 958 states and 3631 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:00,257 INFO L93 Difference]: Finished difference Result 1793 states and 6368 transitions. [2021-06-05 03:41:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:00,260 INFO L225 Difference]: With dead ends: 1793 [2021-06-05 03:41:00,260 INFO L226 Difference]: Without dead ends: 1604 [2021-06-05 03:41:00,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-06-05 03:41:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 982. [2021-06-05 03:41:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 3.778797145769623) internal successors, (3707), 981 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3707 transitions. [2021-06-05 03:41:00,281 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3707 transitions. Word has length 25 [2021-06-05 03:41:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:00,281 INFO L482 AbstractCegarLoop]: Abstraction has 982 states and 3707 transitions. [2021-06-05 03:41:00,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3707 transitions. [2021-06-05 03:41:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:00,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:00,282 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:00,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-06-05 03:41:00,282 INFO L430 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:00,283 INFO L82 PathProgramCache]: Analyzing trace with hash -667121573, now seen corresponding path program 676 times [2021-06-05 03:41:00,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:00,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864898307] [2021-06-05 03:41:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864898307] [2021-06-05 03:41:00,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864898307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824905617] [2021-06-05 03:41:00,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,367 INFO L87 Difference]: Start difference. First operand 982 states and 3707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:00,420 INFO L93 Difference]: Finished difference Result 1779 states and 6299 transitions. [2021-06-05 03:41:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:00,423 INFO L225 Difference]: With dead ends: 1779 [2021-06-05 03:41:00,423 INFO L226 Difference]: Without dead ends: 1580 [2021-06-05 03:41:00,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-06-05 03:41:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 958. [2021-06-05 03:41:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.781609195402299) internal successors, (3619), 957 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3619 transitions. [2021-06-05 03:41:00,443 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3619 transitions. Word has length 25 [2021-06-05 03:41:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:00,443 INFO L482 AbstractCegarLoop]: Abstraction has 958 states and 3619 transitions. [2021-06-05 03:41:00,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3619 transitions. [2021-06-05 03:41:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:00,444 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:00,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:00,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-06-05 03:41:00,444 INFO L430 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash -826470309, now seen corresponding path program 677 times [2021-06-05 03:41:00,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:00,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83468388] [2021-06-05 03:41:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83468388] [2021-06-05 03:41:00,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83468388] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289546756] [2021-06-05 03:41:00,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,526 INFO L87 Difference]: Start difference. First operand 958 states and 3619 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:00,575 INFO L93 Difference]: Finished difference Result 1781 states and 6322 transitions. [2021-06-05 03:41:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:00,578 INFO L225 Difference]: With dead ends: 1781 [2021-06-05 03:41:00,578 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 03:41:00,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 03:41:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 982. [2021-06-05 03:41:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 3.7665647298674823) internal successors, (3695), 981 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3695 transitions. [2021-06-05 03:41:00,598 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3695 transitions. Word has length 25 [2021-06-05 03:41:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:00,598 INFO L482 AbstractCegarLoop]: Abstraction has 982 states and 3695 transitions. [2021-06-05 03:41:00,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3695 transitions. [2021-06-05 03:41:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:00,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:00,600 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:00,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-06-05 03:41:00,600 INFO L430 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:00,600 INFO L82 PathProgramCache]: Analyzing trace with hash 254592317, now seen corresponding path program 678 times [2021-06-05 03:41:00,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:00,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041468610] [2021-06-05 03:41:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041468610] [2021-06-05 03:41:00,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041468610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574925895] [2021-06-05 03:41:00,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,676 INFO L87 Difference]: Start difference. First operand 982 states and 3695 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:00,727 INFO L93 Difference]: Finished difference Result 1773 states and 6270 transitions. [2021-06-05 03:41:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:00,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:00,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:00,730 INFO L225 Difference]: With dead ends: 1773 [2021-06-05 03:41:00,730 INFO L226 Difference]: Without dead ends: 1562 [2021-06-05 03:41:00,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-06-05 03:41:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 946. [2021-06-05 03:41:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.7894179894179896) internal successors, (3581), 945 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3581 transitions. [2021-06-05 03:41:00,750 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3581 transitions. Word has length 25 [2021-06-05 03:41:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:00,750 INFO L482 AbstractCegarLoop]: Abstraction has 946 states and 3581 transitions. [2021-06-05 03:41:00,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3581 transitions. [2021-06-05 03:41:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:00,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:00,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:00,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-06-05 03:41:00,752 INFO L430 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:00,752 INFO L82 PathProgramCache]: Analyzing trace with hash 4970301, now seen corresponding path program 679 times [2021-06-05 03:41:00,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:00,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523133015] [2021-06-05 03:41:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523133015] [2021-06-05 03:41:00,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523133015] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097396640] [2021-06-05 03:41:00,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,827 INFO L87 Difference]: Start difference. First operand 946 states and 3581 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:00,882 INFO L93 Difference]: Finished difference Result 1832 states and 6485 transitions. [2021-06-05 03:41:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:00,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:00,885 INFO L225 Difference]: With dead ends: 1832 [2021-06-05 03:41:00,885 INFO L226 Difference]: Without dead ends: 1643 [2021-06-05 03:41:00,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-06-05 03:41:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 946. [2021-06-05 03:41:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.75978835978836) internal successors, (3553), 945 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3553 transitions. [2021-06-05 03:41:00,906 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3553 transitions. Word has length 25 [2021-06-05 03:41:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:00,906 INFO L482 AbstractCegarLoop]: Abstraction has 946 states and 3553 transitions. [2021-06-05 03:41:00,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3553 transitions. [2021-06-05 03:41:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:00,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:00,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:00,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-06-05 03:41:00,907 INFO L430 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:00,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1197436733, now seen corresponding path program 680 times [2021-06-05 03:41:00,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:00,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109306683] [2021-06-05 03:41:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:00,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:00,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109306683] [2021-06-05 03:41:00,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109306683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:00,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:00,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:00,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046785949] [2021-06-05 03:41:00,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:00,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:00,982 INFO L87 Difference]: Start difference. First operand 946 states and 3553 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,034 INFO L93 Difference]: Finished difference Result 1826 states and 6440 transitions. [2021-06-05 03:41:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:01,037 INFO L225 Difference]: With dead ends: 1826 [2021-06-05 03:41:01,037 INFO L226 Difference]: Without dead ends: 1615 [2021-06-05 03:41:01,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-06-05 03:41:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 918. [2021-06-05 03:41:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.763358778625954) internal successors, (3451), 917 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3451 transitions. [2021-06-05 03:41:01,056 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3451 transitions. Word has length 25 [2021-06-05 03:41:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:01,056 INFO L482 AbstractCegarLoop]: Abstraction has 918 states and 3451 transitions. [2021-06-05 03:41:01,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3451 transitions. [2021-06-05 03:41:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:01,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:01,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:01,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-06-05 03:41:01,058 INFO L430 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:01,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1021026109, now seen corresponding path program 681 times [2021-06-05 03:41:01,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:01,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092341029] [2021-06-05 03:41:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:01,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:01,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092341029] [2021-06-05 03:41:01,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092341029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:01,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:01,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:01,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252430282] [2021-06-05 03:41:01,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:01,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:01,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:01,134 INFO L87 Difference]: Start difference. First operand 918 states and 3451 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,187 INFO L93 Difference]: Finished difference Result 1844 states and 6503 transitions. [2021-06-05 03:41:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:01,191 INFO L225 Difference]: With dead ends: 1844 [2021-06-05 03:41:01,191 INFO L226 Difference]: Without dead ends: 1655 [2021-06-05 03:41:01,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-06-05 03:41:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 981. [2021-06-05 03:41:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 3.73265306122449) internal successors, (3658), 980 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 3658 transitions. [2021-06-05 03:41:01,210 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 3658 transitions. Word has length 25 [2021-06-05 03:41:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:01,210 INFO L482 AbstractCegarLoop]: Abstraction has 981 states and 3658 transitions. [2021-06-05 03:41:01,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 3658 transitions. [2021-06-05 03:41:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:01,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:01,212 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:01,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-06-05 03:41:01,212 INFO L430 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1035245659, now seen corresponding path program 682 times [2021-06-05 03:41:01,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:01,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946777765] [2021-06-05 03:41:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:01,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:01,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946777765] [2021-06-05 03:41:01,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946777765] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:01,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:01,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:01,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215648240] [2021-06-05 03:41:01,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:01,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:01,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:01,291 INFO L87 Difference]: Start difference. First operand 981 states and 3658 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,331 INFO L93 Difference]: Finished difference Result 1749 states and 6201 transitions. [2021-06-05 03:41:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:01,333 INFO L225 Difference]: With dead ends: 1749 [2021-06-05 03:41:01,333 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 03:41:01,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 03:41:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 918. [2021-06-05 03:41:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.7306434023991275) internal successors, (3421), 917 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3421 transitions. [2021-06-05 03:41:01,352 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3421 transitions. Word has length 25 [2021-06-05 03:41:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:01,352 INFO L482 AbstractCegarLoop]: Abstraction has 918 states and 3421 transitions. [2021-06-05 03:41:01,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3421 transitions. [2021-06-05 03:41:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:01,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:01,353 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:01,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-06-05 03:41:01,353 INFO L430 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:01,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:01,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1987473499, now seen corresponding path program 683 times [2021-06-05 03:41:01,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:01,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139526383] [2021-06-05 03:41:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:01,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:01,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139526383] [2021-06-05 03:41:01,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139526383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:01,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:01,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:01,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741236915] [2021-06-05 03:41:01,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:01,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:01,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:01,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:01,438 INFO L87 Difference]: Start difference. First operand 918 states and 3421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,495 INFO L93 Difference]: Finished difference Result 1819 states and 6398 transitions. [2021-06-05 03:41:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:01,498 INFO L225 Difference]: With dead ends: 1819 [2021-06-05 03:41:01,498 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 03:41:01,498 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 03:41:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 962. [2021-06-05 03:41:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 3.718002081165453) internal successors, (3573), 961 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 3573 transitions. [2021-06-05 03:41:01,518 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 3573 transitions. Word has length 25 [2021-06-05 03:41:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:01,518 INFO L482 AbstractCegarLoop]: Abstraction has 962 states and 3573 transitions. [2021-06-05 03:41:01,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 3573 transitions. [2021-06-05 03:41:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:01,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:01,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:01,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-06-05 03:41:01,519 INFO L430 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:01,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:01,520 INFO L82 PathProgramCache]: Analyzing trace with hash 917954493, now seen corresponding path program 684 times [2021-06-05 03:41:01,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:01,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032738151] [2021-06-05 03:41:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:01,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:01,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032738151] [2021-06-05 03:41:01,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032738151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:01,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:01,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:01,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320492490] [2021-06-05 03:41:01,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:01,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:01,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:01,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:01,615 INFO L87 Difference]: Start difference. First operand 962 states and 3573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,655 INFO L93 Difference]: Finished difference Result 1730 states and 6116 transitions. [2021-06-05 03:41:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:01,657 INFO L225 Difference]: With dead ends: 1730 [2021-06-05 03:41:01,657 INFO L226 Difference]: Without dead ends: 1434 [2021-06-05 03:41:01,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-06-05 03:41:01,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 888. [2021-06-05 03:41:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 3.745208568207441) internal successors, (3322), 887 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3322 transitions. [2021-06-05 03:41:01,675 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3322 transitions. Word has length 25 [2021-06-05 03:41:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:01,676 INFO L482 AbstractCegarLoop]: Abstraction has 888 states and 3322 transitions. [2021-06-05 03:41:01,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3322 transitions. [2021-06-05 03:41:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:01,677 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:01,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:01,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-06-05 03:41:01,677 INFO L430 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash -784415969, now seen corresponding path program 685 times [2021-06-05 03:41:01,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:01,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811165562] [2021-06-05 03:41:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:01,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:01,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811165562] [2021-06-05 03:41:01,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811165562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:01,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:01,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:01,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141194214] [2021-06-05 03:41:01,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:01,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:01,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:01,772 INFO L87 Difference]: Start difference. First operand 888 states and 3322 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,824 INFO L93 Difference]: Finished difference Result 1692 states and 5933 transitions. [2021-06-05 03:41:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:01,827 INFO L225 Difference]: With dead ends: 1692 [2021-06-05 03:41:01,827 INFO L226 Difference]: Without dead ends: 1503 [2021-06-05 03:41:01,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-06-05 03:41:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 888. [2021-06-05 03:41:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 3.7181510710259302) internal successors, (3298), 887 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3298 transitions. [2021-06-05 03:41:01,845 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3298 transitions. Word has length 25 [2021-06-05 03:41:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:01,845 INFO L482 AbstractCegarLoop]: Abstraction has 888 states and 3298 transitions. [2021-06-05 03:41:01,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3298 transitions. [2021-06-05 03:41:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:01,848 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:01,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:01,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-06-05 03:41:01,849 INFO L430 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:01,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1710065987, now seen corresponding path program 686 times [2021-06-05 03:41:01,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:01,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937836073] [2021-06-05 03:41:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:01,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:01,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937836073] [2021-06-05 03:41:01,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937836073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:01,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:01,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:01,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144482127] [2021-06-05 03:41:01,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:01,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:01,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:01,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:01,946 INFO L87 Difference]: Start difference. First operand 888 states and 3298 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:01,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:01,998 INFO L93 Difference]: Finished difference Result 1678 states and 5864 transitions. [2021-06-05 03:41:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,001 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 03:41:02,001 INFO L226 Difference]: Without dead ends: 1479 [2021-06-05 03:41:02,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-06-05 03:41:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 864. [2021-06-05 03:41:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.719582850521437) internal successors, (3210), 863 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3210 transitions. [2021-06-05 03:41:02,019 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3210 transitions. Word has length 25 [2021-06-05 03:41:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,019 INFO L482 AbstractCegarLoop]: Abstraction has 864 states and 3210 transitions. [2021-06-05 03:41:02,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3210 transitions. [2021-06-05 03:41:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,020 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,020 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-06-05 03:41:02,020 INFO L430 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1547196413, now seen corresponding path program 687 times [2021-06-05 03:41:02,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729960509] [2021-06-05 03:41:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:02,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:02,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729960509] [2021-06-05 03:41:02,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729960509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:02,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:02,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:02,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097874115] [2021-06-05 03:41:02,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:02,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:02,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:02,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:02,136 INFO L87 Difference]: Start difference. First operand 864 states and 3210 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:02,189 INFO L93 Difference]: Finished difference Result 1653 states and 5759 transitions. [2021-06-05 03:41:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:02,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,191 INFO L225 Difference]: With dead ends: 1653 [2021-06-05 03:41:02,191 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 03:41:02,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 03:41:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 802. [2021-06-05 03:41:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 3.6928838951310863) internal successors, (2958), 801 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2958 transitions. [2021-06-05 03:41:02,208 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2958 transitions. Word has length 25 [2021-06-05 03:41:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,208 INFO L482 AbstractCegarLoop]: Abstraction has 802 states and 2958 transitions. [2021-06-05 03:41:02,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2958 transitions. [2021-06-05 03:41:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,209 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,209 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-06-05 03:41:02,209 INFO L430 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1550119875, now seen corresponding path program 688 times [2021-06-05 03:41:02,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666340270] [2021-06-05 03:41:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:02,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:02,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666340270] [2021-06-05 03:41:02,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666340270] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:02,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:02,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:02,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240455640] [2021-06-05 03:41:02,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:02,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:02,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:02,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:02,295 INFO L87 Difference]: Start difference. First operand 802 states and 2958 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:02,336 INFO L93 Difference]: Finished difference Result 1558 states and 5457 transitions. [2021-06-05 03:41:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,338 INFO L225 Difference]: With dead ends: 1558 [2021-06-05 03:41:02,338 INFO L226 Difference]: Without dead ends: 1273 [2021-06-05 03:41:02,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-06-05 03:41:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 739. [2021-06-05 03:41:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 3.68970189701897) internal successors, (2723), 738 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 2723 transitions. [2021-06-05 03:41:02,353 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 2723 transitions. Word has length 25 [2021-06-05 03:41:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,353 INFO L482 AbstractCegarLoop]: Abstraction has 739 states and 2723 transitions. [2021-06-05 03:41:02,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 2723 transitions. [2021-06-05 03:41:02,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,354 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-06-05 03:41:02,354 INFO L430 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash -929980325, now seen corresponding path program 689 times [2021-06-05 03:41:02,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734575636] [2021-06-05 03:41:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:02,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:02,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734575636] [2021-06-05 03:41:02,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734575636] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:02,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:02,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:02,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517320853] [2021-06-05 03:41:02,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:02,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:02,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:02,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:02,445 INFO L87 Difference]: Start difference. First operand 739 states and 2723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:02,499 INFO L93 Difference]: Finished difference Result 1488 states and 5227 transitions. [2021-06-05 03:41:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:02,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,501 INFO L225 Difference]: With dead ends: 1488 [2021-06-05 03:41:02,502 INFO L226 Difference]: Without dead ends: 1313 [2021-06-05 03:41:02,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-06-05 03:41:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 779. [2021-06-05 03:41:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 3.6799485861182517) internal successors, (2863), 778 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2863 transitions. [2021-06-05 03:41:02,518 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2863 transitions. Word has length 25 [2021-06-05 03:41:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,518 INFO L482 AbstractCegarLoop]: Abstraction has 779 states and 2863 transitions. [2021-06-05 03:41:02,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2863 transitions. [2021-06-05 03:41:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-06-05 03:41:02,519 INFO L430 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,519 INFO L82 PathProgramCache]: Analyzing trace with hash -711628739, now seen corresponding path program 690 times [2021-06-05 03:41:02,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920685513] [2021-06-05 03:41:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:02,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:02,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920685513] [2021-06-05 03:41:02,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920685513] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:02,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:02,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:02,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992441208] [2021-06-05 03:41:02,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:02,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:02,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:02,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:02,611 INFO L87 Difference]: Start difference. First operand 779 states and 2863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:02,650 INFO L93 Difference]: Finished difference Result 1312 states and 4642 transitions. [2021-06-05 03:41:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:02,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,652 INFO L225 Difference]: With dead ends: 1312 [2021-06-05 03:41:02,652 INFO L226 Difference]: Without dead ends: 1022 [2021-06-05 03:41:02,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-06-05 03:41:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 711. [2021-06-05 03:41:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 3.702816901408451) internal successors, (2629), 710 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 2629 transitions. [2021-06-05 03:41:02,665 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 2629 transitions. Word has length 25 [2021-06-05 03:41:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,665 INFO L482 AbstractCegarLoop]: Abstraction has 711 states and 2629 transitions. [2021-06-05 03:41:02,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 2629 transitions. [2021-06-05 03:41:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-06-05 03:41:02,666 INFO L430 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash -30381989, now seen corresponding path program 691 times [2021-06-05 03:41:02,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133704262] [2021-06-05 03:41:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:02,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:02,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133704262] [2021-06-05 03:41:02,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133704262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:02,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:02,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:02,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74003292] [2021-06-05 03:41:02,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:02,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:02,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:02,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:02,749 INFO L87 Difference]: Start difference. First operand 711 states and 2629 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:02,801 INFO L93 Difference]: Finished difference Result 1477 states and 5238 transitions. [2021-06-05 03:41:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,803 INFO L225 Difference]: With dead ends: 1477 [2021-06-05 03:41:02,803 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 03:41:02,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 03:41:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 755. [2021-06-05 03:41:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 3.7095490716180373) internal successors, (2797), 754 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2797 transitions. [2021-06-05 03:41:02,819 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2797 transitions. Word has length 25 [2021-06-05 03:41:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,819 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 2797 transitions. [2021-06-05 03:41:02,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2797 transitions. [2021-06-05 03:41:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-06-05 03:41:02,820 INFO L430 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1050680637, now seen corresponding path program 692 times [2021-06-05 03:41:02,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26626988] [2021-06-05 03:41:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:02,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:02,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26626988] [2021-06-05 03:41:02,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26626988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:02,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:02,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:02,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274160367] [2021-06-05 03:41:02,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:02,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:02,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:02,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:02,902 INFO L87 Difference]: Start difference. First operand 755 states and 2797 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:02,953 INFO L93 Difference]: Finished difference Result 1469 states and 5186 transitions. [2021-06-05 03:41:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:02,956 INFO L225 Difference]: With dead ends: 1469 [2021-06-05 03:41:02,956 INFO L226 Difference]: Without dead ends: 1270 [2021-06-05 03:41:02,956 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:02,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-06-05 03:41:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 731. [2021-06-05 03:41:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.710958904109589) internal successors, (2709), 730 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2709 transitions. [2021-06-05 03:41:02,970 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2709 transitions. Word has length 25 [2021-06-05 03:41:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:02,970 INFO L482 AbstractCegarLoop]: Abstraction has 731 states and 2709 transitions. [2021-06-05 03:41:02,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2709 transitions. [2021-06-05 03:41:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:02,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:02,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:02,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-06-05 03:41:02,971 INFO L430 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:02,971 INFO L82 PathProgramCache]: Analyzing trace with hash -647905347, now seen corresponding path program 693 times [2021-06-05 03:41:02,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:02,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216771269] [2021-06-05 03:41:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216771269] [2021-06-05 03:41:03,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216771269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946813942] [2021-06-05 03:41:03,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,063 INFO L87 Difference]: Start difference. First operand 731 states and 2709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,114 INFO L93 Difference]: Finished difference Result 1397 states and 4922 transitions. [2021-06-05 03:41:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,116 INFO L225 Difference]: With dead ends: 1397 [2021-06-05 03:41:03,116 INFO L226 Difference]: Without dead ends: 1214 [2021-06-05 03:41:03,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2021-06-05 03:41:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 775. [2021-06-05 03:41:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.6963824289405687) internal successors, (2861), 774 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2861 transitions. [2021-06-05 03:41:03,131 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2861 transitions. Word has length 25 [2021-06-05 03:41:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:03,131 INFO L482 AbstractCegarLoop]: Abstraction has 775 states and 2861 transitions. [2021-06-05 03:41:03,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2861 transitions. [2021-06-05 03:41:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:03,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:03,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:03,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-06-05 03:41:03,132 INFO L430 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:03,132 INFO L82 PathProgramCache]: Analyzing trace with hash 121866173, now seen corresponding path program 694 times [2021-06-05 03:41:03,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:03,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499548590] [2021-06-05 03:41:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499548590] [2021-06-05 03:41:03,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499548590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133349592] [2021-06-05 03:41:03,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,225 INFO L87 Difference]: Start difference. First operand 775 states and 2861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,264 INFO L93 Difference]: Finished difference Result 1308 states and 4640 transitions. [2021-06-05 03:41:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,266 INFO L225 Difference]: With dead ends: 1308 [2021-06-05 03:41:03,266 INFO L226 Difference]: Without dead ends: 1042 [2021-06-05 03:41:03,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-06-05 03:41:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 731. [2021-06-05 03:41:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.6835616438356165) internal successors, (2689), 730 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2689 transitions. [2021-06-05 03:41:03,279 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2689 transitions. Word has length 25 [2021-06-05 03:41:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:03,279 INFO L482 AbstractCegarLoop]: Abstraction has 731 states and 2689 transitions. [2021-06-05 03:41:03,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2689 transitions. [2021-06-05 03:41:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:03,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:03,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:03,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-06-05 03:41:03,280 INFO L430 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:03,281 INFO L82 PathProgramCache]: Analyzing trace with hash -259900385, now seen corresponding path program 695 times [2021-06-05 03:41:03,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:03,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507263675] [2021-06-05 03:41:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507263675] [2021-06-05 03:41:03,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507263675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987068779] [2021-06-05 03:41:03,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,371 INFO L87 Difference]: Start difference. First operand 731 states and 2689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,425 INFO L93 Difference]: Finished difference Result 1169 states and 4133 transitions. [2021-06-05 03:41:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,427 INFO L225 Difference]: With dead ends: 1169 [2021-06-05 03:41:03,427 INFO L226 Difference]: Without dead ends: 994 [2021-06-05 03:41:03,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-06-05 03:41:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 771. [2021-06-05 03:41:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 3.674025974025974) internal successors, (2829), 770 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 2829 transitions. [2021-06-05 03:41:03,440 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 2829 transitions. Word has length 25 [2021-06-05 03:41:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:03,440 INFO L482 AbstractCegarLoop]: Abstraction has 771 states and 2829 transitions. [2021-06-05 03:41:03,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 2829 transitions. [2021-06-05 03:41:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:03,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:03,441 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:03,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-06-05 03:41:03,441 INFO L430 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:03,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2080935811, now seen corresponding path program 696 times [2021-06-05 03:41:03,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:03,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114628010] [2021-06-05 03:41:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114628010] [2021-06-05 03:41:03,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114628010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080110476] [2021-06-05 03:41:03,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,532 INFO L87 Difference]: Start difference. First operand 771 states and 2829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,573 INFO L93 Difference]: Finished difference Result 993 states and 3548 transitions. [2021-06-05 03:41:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,574 INFO L225 Difference]: With dead ends: 993 [2021-06-05 03:41:03,574 INFO L226 Difference]: Without dead ends: 697 [2021-06-05 03:41:03,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-06-05 03:41:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2021-06-05 03:41:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.7198275862068964) internal successors, (2589), 696 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2589 transitions. [2021-06-05 03:41:03,585 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2589 transitions. Word has length 25 [2021-06-05 03:41:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:03,585 INFO L482 AbstractCegarLoop]: Abstraction has 697 states and 2589 transitions. [2021-06-05 03:41:03,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2589 transitions. [2021-06-05 03:41:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:03,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:03,586 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:03,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-06-05 03:41:03,586 INFO L430 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:03,587 INFO L82 PathProgramCache]: Analyzing trace with hash 738750649, now seen corresponding path program 697 times [2021-06-05 03:41:03,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:03,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253043821] [2021-06-05 03:41:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253043821] [2021-06-05 03:41:03,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253043821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664745832] [2021-06-05 03:41:03,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,662 INFO L87 Difference]: Start difference. First operand 697 states and 2589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,711 INFO L93 Difference]: Finished difference Result 1284 states and 4495 transitions. [2021-06-05 03:41:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,714 INFO L225 Difference]: With dead ends: 1284 [2021-06-05 03:41:03,714 INFO L226 Difference]: Without dead ends: 1097 [2021-06-05 03:41:03,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-06-05 03:41:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 725. [2021-06-05 03:41:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 3.697513812154696) internal successors, (2677), 724 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 2677 transitions. [2021-06-05 03:41:03,727 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 2677 transitions. Word has length 25 [2021-06-05 03:41:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:03,727 INFO L482 AbstractCegarLoop]: Abstraction has 725 states and 2677 transitions. [2021-06-05 03:41:03,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 2677 transitions. [2021-06-05 03:41:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:03,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:03,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:03,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-06-05 03:41:03,728 INFO L430 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1819813275, now seen corresponding path program 698 times [2021-06-05 03:41:03,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:03,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734642470] [2021-06-05 03:41:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734642470] [2021-06-05 03:41:03,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734642470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704786242] [2021-06-05 03:41:03,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,806 INFO L87 Difference]: Start difference. First operand 725 states and 2677 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,855 INFO L93 Difference]: Finished difference Result 1280 states and 4455 transitions. [2021-06-05 03:41:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,858 INFO L225 Difference]: With dead ends: 1280 [2021-06-05 03:41:03,858 INFO L226 Difference]: Without dead ends: 1069 [2021-06-05 03:41:03,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-06-05 03:41:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 697. [2021-06-05 03:41:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.7025862068965516) internal successors, (2577), 696 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2577 transitions. [2021-06-05 03:41:03,871 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2577 transitions. Word has length 25 [2021-06-05 03:41:03,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:03,871 INFO L482 AbstractCegarLoop]: Abstraction has 697 states and 2577 transitions. [2021-06-05 03:41:03,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2577 transitions. [2021-06-05 03:41:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:03,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:03,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:03,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-06-05 03:41:03,872 INFO L430 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:03,872 INFO L82 PathProgramCache]: Analyzing trace with hash 257848603, now seen corresponding path program 699 times [2021-06-05 03:41:03,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:03,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323245650] [2021-06-05 03:41:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:03,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:03,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323245650] [2021-06-05 03:41:03,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323245650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:03,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:03,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:03,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472030749] [2021-06-05 03:41:03,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:03,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:03,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:03,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:03,948 INFO L87 Difference]: Start difference. First operand 697 states and 2577 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:03,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:03,997 INFO L93 Difference]: Finished difference Result 1272 states and 4439 transitions. [2021-06-05 03:41:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:03,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:03,999 INFO L225 Difference]: With dead ends: 1272 [2021-06-05 03:41:03,999 INFO L226 Difference]: Without dead ends: 1085 [2021-06-05 03:41:04,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-06-05 03:41:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 721. [2021-06-05 03:41:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.6847222222222222) internal successors, (2653), 720 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2653 transitions. [2021-06-05 03:41:04,013 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2653 transitions. Word has length 25 [2021-06-05 03:41:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,013 INFO L482 AbstractCegarLoop]: Abstraction has 721 states and 2653 transitions. [2021-06-05 03:41:04,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2653 transitions. [2021-06-05 03:41:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-06-05 03:41:04,014 INFO L430 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1430397669, now seen corresponding path program 700 times [2021-06-05 03:41:04,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910130146] [2021-06-05 03:41:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910130146] [2021-06-05 03:41:04,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910130146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605017693] [2021-06-05 03:41:04,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,090 INFO L87 Difference]: Start difference. First operand 721 states and 2653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:04,141 INFO L93 Difference]: Finished difference Result 1260 states and 4375 transitions. [2021-06-05 03:41:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:04,143 INFO L225 Difference]: With dead ends: 1260 [2021-06-05 03:41:04,143 INFO L226 Difference]: Without dead ends: 1061 [2021-06-05 03:41:04,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-06-05 03:41:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 697. [2021-06-05 03:41:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.685344827586207) internal successors, (2565), 696 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2565 transitions. [2021-06-05 03:41:04,156 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2565 transitions. Word has length 25 [2021-06-05 03:41:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,156 INFO L482 AbstractCegarLoop]: Abstraction has 697 states and 2565 transitions. [2021-06-05 03:41:04,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2565 transitions. [2021-06-05 03:41:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-06-05 03:41:04,157 INFO L430 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash 645853565, now seen corresponding path program 701 times [2021-06-05 03:41:04,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498263011] [2021-06-05 03:41:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498263011] [2021-06-05 03:41:04,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498263011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067448375] [2021-06-05 03:41:04,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,234 INFO L87 Difference]: Start difference. First operand 697 states and 2565 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:04,284 INFO L93 Difference]: Finished difference Result 1264 states and 4403 transitions. [2021-06-05 03:41:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:04,286 INFO L225 Difference]: With dead ends: 1264 [2021-06-05 03:41:04,287 INFO L226 Difference]: Without dead ends: 1081 [2021-06-05 03:41:04,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-06-05 03:41:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 721. [2021-06-05 03:41:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.6680555555555556) internal successors, (2641), 720 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2641 transitions. [2021-06-05 03:41:04,300 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2641 transitions. Word has length 25 [2021-06-05 03:41:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,300 INFO L482 AbstractCegarLoop]: Abstraction has 721 states and 2641 transitions. [2021-06-05 03:41:04,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,301 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2641 transitions. [2021-06-05 03:41:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,301 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-06-05 03:41:04,302 INFO L430 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash -200943397, now seen corresponding path program 702 times [2021-06-05 03:41:04,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938497478] [2021-06-05 03:41:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938497478] [2021-06-05 03:41:04,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938497478] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445242610] [2021-06-05 03:41:04,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,379 INFO L87 Difference]: Start difference. First operand 721 states and 2641 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:04,431 INFO L93 Difference]: Finished difference Result 1256 states and 4351 transitions. [2021-06-05 03:41:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:04,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:04,433 INFO L225 Difference]: With dead ends: 1256 [2021-06-05 03:41:04,433 INFO L226 Difference]: Without dead ends: 1045 [2021-06-05 03:41:04,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-06-05 03:41:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 685. [2021-06-05 03:41:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.6944444444444446) internal successors, (2527), 684 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2527 transitions. [2021-06-05 03:41:04,446 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2527 transitions. Word has length 25 [2021-06-05 03:41:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,446 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 2527 transitions. [2021-06-05 03:41:04,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2527 transitions. [2021-06-05 03:41:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-06-05 03:41:04,447 INFO L430 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,447 INFO L82 PathProgramCache]: Analyzing trace with hash 4290459, now seen corresponding path program 703 times [2021-06-05 03:41:04,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996562066] [2021-06-05 03:41:04,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996562066] [2021-06-05 03:41:04,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996562066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352790136] [2021-06-05 03:41:04,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,524 INFO L87 Difference]: Start difference. First operand 685 states and 2527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:04,573 INFO L93 Difference]: Finished difference Result 1244 states and 4317 transitions. [2021-06-05 03:41:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:04,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:04,575 INFO L225 Difference]: With dead ends: 1244 [2021-06-05 03:41:04,575 INFO L226 Difference]: Without dead ends: 1057 [2021-06-05 03:41:04,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-06-05 03:41:04,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 685. [2021-06-05 03:41:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.6535087719298245) internal successors, (2499), 684 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2499 transitions. [2021-06-05 03:41:04,588 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2499 transitions. Word has length 25 [2021-06-05 03:41:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,588 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 2499 transitions. [2021-06-05 03:41:04,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2499 transitions. [2021-06-05 03:41:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-06-05 03:41:04,589 INFO L430 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1085353085, now seen corresponding path program 704 times [2021-06-05 03:41:04,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208827864] [2021-06-05 03:41:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208827864] [2021-06-05 03:41:04,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208827864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145027804] [2021-06-05 03:41:04,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,667 INFO L87 Difference]: Start difference. First operand 685 states and 2499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:04,716 INFO L93 Difference]: Finished difference Result 1240 states and 4277 transitions. [2021-06-05 03:41:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:04,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:04,718 INFO L225 Difference]: With dead ends: 1240 [2021-06-05 03:41:04,718 INFO L226 Difference]: Without dead ends: 1029 [2021-06-05 03:41:04,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-06-05 03:41:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 657. [2021-06-05 03:41:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.653963414634146) internal successors, (2397), 656 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2397 transitions. [2021-06-05 03:41:04,730 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2397 transitions. Word has length 25 [2021-06-05 03:41:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,730 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2397 transitions. [2021-06-05 03:41:04,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2397 transitions. [2021-06-05 03:41:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,731 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-06-05 03:41:04,731 INFO L430 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1020346267, now seen corresponding path program 705 times [2021-06-05 03:41:04,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396005766] [2021-06-05 03:41:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396005766] [2021-06-05 03:41:04,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396005766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225031451] [2021-06-05 03:41:04,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,823 INFO L87 Difference]: Start difference. First operand 657 states and 2397 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:04,873 INFO L93 Difference]: Finished difference Result 1241 states and 4289 transitions. [2021-06-05 03:41:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:04,875 INFO L225 Difference]: With dead ends: 1241 [2021-06-05 03:41:04,875 INFO L226 Difference]: Without dead ends: 1054 [2021-06-05 03:41:04,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-06-05 03:41:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 703. [2021-06-05 03:41:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 3.6381766381766383) internal successors, (2554), 702 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 2554 transitions. [2021-06-05 03:41:04,887 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 2554 transitions. Word has length 25 [2021-06-05 03:41:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:04,888 INFO L482 AbstractCegarLoop]: Abstraction has 703 states and 2554 transitions. [2021-06-05 03:41:04,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 2554 transitions. [2021-06-05 03:41:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:04,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:04,889 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:04,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-06-05 03:41:04,889 INFO L430 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:04,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:04,889 INFO L82 PathProgramCache]: Analyzing trace with hash -767035493, now seen corresponding path program 706 times [2021-06-05 03:41:04,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:04,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266063409] [2021-06-05 03:41:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:04,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:04,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266063409] [2021-06-05 03:41:04,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266063409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:04,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:04,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:04,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824966252] [2021-06-05 03:41:04,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:04,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:04,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:04,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:04,965 INFO L87 Difference]: Start difference. First operand 703 states and 2554 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,001 INFO L93 Difference]: Finished difference Result 1148 states and 3993 transitions. [2021-06-05 03:41:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,003 INFO L225 Difference]: With dead ends: 1148 [2021-06-05 03:41:05,003 INFO L226 Difference]: Without dead ends: 880 [2021-06-05 03:41:05,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-06-05 03:41:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 657. [2021-06-05 03:41:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.620426829268293) internal successors, (2375), 656 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2375 transitions. [2021-06-05 03:41:05,015 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2375 transitions. Word has length 25 [2021-06-05 03:41:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,015 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2375 transitions. [2021-06-05 03:41:05,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2375 transitions. [2021-06-05 03:41:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-06-05 03:41:05,016 INFO L430 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1408351229, now seen corresponding path program 707 times [2021-06-05 03:41:05,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324824608] [2021-06-05 03:41:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324824608] [2021-06-05 03:41:05,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324824608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308679367] [2021-06-05 03:41:05,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,102 INFO L87 Difference]: Start difference. First operand 657 states and 2375 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,149 INFO L93 Difference]: Finished difference Result 1235 states and 4248 transitions. [2021-06-05 03:41:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,151 INFO L225 Difference]: With dead ends: 1235 [2021-06-05 03:41:05,151 INFO L226 Difference]: Without dead ends: 1052 [2021-06-05 03:41:05,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-06-05 03:41:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 701. [2021-06-05 03:41:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 3.61) internal successors, (2527), 700 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2527 transitions. [2021-06-05 03:41:05,164 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2527 transitions. Word has length 25 [2021-06-05 03:41:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,164 INFO L482 AbstractCegarLoop]: Abstraction has 701 states and 2527 transitions. [2021-06-05 03:41:05,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2527 transitions. [2021-06-05 03:41:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-06-05 03:41:05,165 INFO L430 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1681966885, now seen corresponding path program 708 times [2021-06-05 03:41:05,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750426477] [2021-06-05 03:41:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750426477] [2021-06-05 03:41:05,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750426477] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376822818] [2021-06-05 03:41:05,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,253 INFO L87 Difference]: Start difference. First operand 701 states and 2527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,289 INFO L93 Difference]: Finished difference Result 1146 states and 3966 transitions. [2021-06-05 03:41:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,291 INFO L225 Difference]: With dead ends: 1146 [2021-06-05 03:41:05,291 INFO L226 Difference]: Without dead ends: 858 [2021-06-05 03:41:05,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-06-05 03:41:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 635. [2021-06-05 03:41:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 3.6277602523659307) internal successors, (2300), 634 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2300 transitions. [2021-06-05 03:41:05,302 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2300 transitions. Word has length 25 [2021-06-05 03:41:05,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,302 INFO L482 AbstractCegarLoop]: Abstraction has 635 states and 2300 transitions. [2021-06-05 03:41:05,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2300 transitions. [2021-06-05 03:41:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,303 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-06-05 03:41:05,303 INFO L430 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,303 INFO L82 PathProgramCache]: Analyzing trace with hash -785095811, now seen corresponding path program 709 times [2021-06-05 03:41:05,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503379035] [2021-06-05 03:41:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503379035] [2021-06-05 03:41:05,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503379035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211152549] [2021-06-05 03:41:05,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,378 INFO L87 Difference]: Start difference. First operand 635 states and 2300 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,426 INFO L93 Difference]: Finished difference Result 1126 states and 3846 transitions. [2021-06-05 03:41:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,428 INFO L225 Difference]: With dead ends: 1126 [2021-06-05 03:41:05,428 INFO L226 Difference]: Without dead ends: 939 [2021-06-05 03:41:05,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-06-05 03:41:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 635. [2021-06-05 03:41:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 3.589905362776025) internal successors, (2276), 634 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2276 transitions. [2021-06-05 03:41:05,439 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2276 transitions. Word has length 25 [2021-06-05 03:41:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,439 INFO L482 AbstractCegarLoop]: Abstraction has 635 states and 2276 transitions. [2021-06-05 03:41:05,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2276 transitions. [2021-06-05 03:41:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,440 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-06-05 03:41:05,440 INFO L430 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1821625213, now seen corresponding path program 710 times [2021-06-05 03:41:05,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003661292] [2021-06-05 03:41:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003661292] [2021-06-05 03:41:05,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003661292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143440395] [2021-06-05 03:41:05,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,515 INFO L87 Difference]: Start difference. First operand 635 states and 2276 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,565 INFO L93 Difference]: Finished difference Result 1114 states and 3782 transitions. [2021-06-05 03:41:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,567 INFO L225 Difference]: With dead ends: 1114 [2021-06-05 03:41:05,567 INFO L226 Difference]: Without dead ends: 915 [2021-06-05 03:41:05,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-06-05 03:41:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 611. [2021-06-05 03:41:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 3.586885245901639) internal successors, (2188), 610 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 2188 transitions. [2021-06-05 03:41:05,578 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 2188 transitions. Word has length 25 [2021-06-05 03:41:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,578 INFO L482 AbstractCegarLoop]: Abstraction has 611 states and 2188 transitions. [2021-06-05 03:41:05,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 2188 transitions. [2021-06-05 03:41:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-06-05 03:41:05,579 INFO L430 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1546516571, now seen corresponding path program 711 times [2021-06-05 03:41:05,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069739391] [2021-06-05 03:41:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069739391] [2021-06-05 03:41:05,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069739391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612181302] [2021-06-05 03:41:05,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,661 INFO L87 Difference]: Start difference. First operand 611 states and 2188 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,708 INFO L93 Difference]: Finished difference Result 1089 states and 3677 transitions. [2021-06-05 03:41:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,709 INFO L225 Difference]: With dead ends: 1089 [2021-06-05 03:41:05,709 INFO L226 Difference]: Without dead ends: 902 [2021-06-05 03:41:05,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-06-05 03:41:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 551. [2021-06-05 03:41:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 3.5309090909090908) internal successors, (1942), 550 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1942 transitions. [2021-06-05 03:41:05,719 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1942 transitions. Word has length 25 [2021-06-05 03:41:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,719 INFO L482 AbstractCegarLoop]: Abstraction has 551 states and 1942 transitions. [2021-06-05 03:41:05,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1942 transitions. [2021-06-05 03:41:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,720 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-06-05 03:41:05,720 INFO L430 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,720 INFO L82 PathProgramCache]: Analyzing trace with hash 942566269, now seen corresponding path program 712 times [2021-06-05 03:41:05,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889189583] [2021-06-05 03:41:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889189583] [2021-06-05 03:41:05,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889189583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327104361] [2021-06-05 03:41:05,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,798 INFO L87 Difference]: Start difference. First operand 551 states and 1942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,831 INFO L93 Difference]: Finished difference Result 996 states and 3381 transitions. [2021-06-05 03:41:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,833 INFO L225 Difference]: With dead ends: 996 [2021-06-05 03:41:05,833 INFO L226 Difference]: Without dead ends: 728 [2021-06-05 03:41:05,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-06-05 03:41:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 505. [2021-06-05 03:41:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 3.501984126984127) internal successors, (1765), 504 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1765 transitions. [2021-06-05 03:41:05,841 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1765 transitions. Word has length 25 [2021-06-05 03:41:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,841 INFO L482 AbstractCegarLoop]: Abstraction has 505 states and 1765 transitions. [2021-06-05 03:41:05,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1765 transitions. [2021-06-05 03:41:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-06-05 03:41:05,842 INFO L430 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2134672253, now seen corresponding path program 713 times [2021-06-05 03:41:05,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847495177] [2021-06-05 03:41:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:05,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:05,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847495177] [2021-06-05 03:41:05,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847495177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:05,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:05,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:05,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318382807] [2021-06-05 03:41:05,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:05,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:05,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:05,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:05,928 INFO L87 Difference]: Start difference. First operand 505 states and 1765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:05,973 INFO L93 Difference]: Finished difference Result 943 states and 3209 transitions. [2021-06-05 03:41:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:05,975 INFO L225 Difference]: With dead ends: 943 [2021-06-05 03:41:05,975 INFO L226 Difference]: Without dead ends: 768 [2021-06-05 03:41:05,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-06-05 03:41:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 545. [2021-06-05 03:41:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 3.5018382352941178) internal successors, (1905), 544 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1905 transitions. [2021-06-05 03:41:05,983 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1905 transitions. Word has length 25 [2021-06-05 03:41:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:05,984 INFO L482 AbstractCegarLoop]: Abstraction has 545 states and 1905 transitions. [2021-06-05 03:41:05,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1905 transitions. [2021-06-05 03:41:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:05,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:05,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:05,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-06-05 03:41:05,984 INFO L430 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:05,985 INFO L82 PathProgramCache]: Analyzing trace with hash 313636827, now seen corresponding path program 714 times [2021-06-05 03:41:05,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:05,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121159133] [2021-06-05 03:41:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121159133] [2021-06-05 03:41:06,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121159133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489360555] [2021-06-05 03:41:06,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,071 INFO L87 Difference]: Start difference. First operand 545 states and 1905 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,103 INFO L93 Difference]: Finished difference Result 767 states and 2624 transitions. [2021-06-05 03:41:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,104 INFO L225 Difference]: With dead ends: 767 [2021-06-05 03:41:06,104 INFO L226 Difference]: Without dead ends: 485 [2021-06-05 03:41:06,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-06-05 03:41:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2021-06-05 03:41:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.5020661157024793) internal successors, (1695), 484 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1695 transitions. [2021-06-05 03:41:06,111 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1695 transitions. Word has length 25 [2021-06-05 03:41:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,111 INFO L482 AbstractCegarLoop]: Abstraction has 485 states and 1695 transitions. [2021-06-05 03:41:06,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1695 transitions. [2021-06-05 03:41:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:06,112 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:06,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:06,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-06-05 03:41:06,112 INFO L430 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash -705575073, now seen corresponding path program 715 times [2021-06-05 03:41:06,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:06,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893656244] [2021-06-05 03:41:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893656244] [2021-06-05 03:41:06,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893656244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184127489] [2021-06-05 03:41:06,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,197 INFO L87 Difference]: Start difference. First operand 485 states and 1695 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,242 INFO L93 Difference]: Finished difference Result 796 states and 2668 transitions. [2021-06-05 03:41:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,243 INFO L225 Difference]: With dead ends: 796 [2021-06-05 03:41:06,243 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 03:41:06,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 03:41:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 485. [2021-06-05 03:41:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.4524793388429753) internal successors, (1671), 484 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1671 transitions. [2021-06-05 03:41:06,251 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1671 transitions. Word has length 25 [2021-06-05 03:41:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,251 INFO L482 AbstractCegarLoop]: Abstraction has 485 states and 1671 transitions. [2021-06-05 03:41:06,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1671 transitions. [2021-06-05 03:41:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:06,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:06,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:06,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-06-05 03:41:06,252 INFO L430 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1552372035, now seen corresponding path program 716 times [2021-06-05 03:41:06,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:06,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629572530] [2021-06-05 03:41:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629572530] [2021-06-05 03:41:06,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629572530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593347621] [2021-06-05 03:41:06,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,337 INFO L87 Difference]: Start difference. First operand 485 states and 1671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,382 INFO L93 Difference]: Finished difference Result 788 states and 2616 transitions. [2021-06-05 03:41:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,384 INFO L225 Difference]: With dead ends: 788 [2021-06-05 03:41:06,384 INFO L226 Difference]: Without dead ends: 589 [2021-06-05 03:41:06,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-06-05 03:41:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 461. [2021-06-05 03:41:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.4413043478260867) internal successors, (1583), 460 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1583 transitions. [2021-06-05 03:41:06,391 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1583 transitions. Word has length 25 [2021-06-05 03:41:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,391 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1583 transitions. [2021-06-05 03:41:06,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1583 transitions. [2021-06-05 03:41:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:06,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:06,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:06,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-06-05 03:41:06,392 INFO L430 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1626037309, now seen corresponding path program 717 times [2021-06-05 03:41:06,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:06,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455932234] [2021-06-05 03:41:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455932234] [2021-06-05 03:41:06,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455932234] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559007102] [2021-06-05 03:41:06,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,487 INFO L87 Difference]: Start difference. First operand 461 states and 1583 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,530 INFO L93 Difference]: Finished difference Result 716 states and 2352 transitions. [2021-06-05 03:41:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,531 INFO L225 Difference]: With dead ends: 716 [2021-06-05 03:41:06,531 INFO L226 Difference]: Without dead ends: 533 [2021-06-05 03:41:06,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-06-05 03:41:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 405. [2021-06-05 03:41:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.344059405940594) internal successors, (1351), 404 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1351 transitions. [2021-06-05 03:41:06,538 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1351 transitions. Word has length 25 [2021-06-05 03:41:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,538 INFO L482 AbstractCegarLoop]: Abstraction has 405 states and 1351 transitions. [2021-06-05 03:41:06,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1351 transitions. [2021-06-05 03:41:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:06,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:06,538 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:06,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-06-05 03:41:06,538 INFO L430 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:06,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:06,538 INFO L82 PathProgramCache]: Analyzing trace with hash -280849347, now seen corresponding path program 718 times [2021-06-05 03:41:06,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:06,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312955419] [2021-06-05 03:41:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312955419] [2021-06-05 03:41:06,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312955419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473436146] [2021-06-05 03:41:06,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,634 INFO L87 Difference]: Start difference. First operand 405 states and 1351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,665 INFO L93 Difference]: Finished difference Result 627 states and 2070 transitions. [2021-06-05 03:41:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,666 INFO L225 Difference]: With dead ends: 627 [2021-06-05 03:41:06,666 INFO L226 Difference]: Without dead ends: 361 [2021-06-05 03:41:06,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-06-05 03:41:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-06-05 03:41:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 3.275) internal successors, (1179), 360 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1179 transitions. [2021-06-05 03:41:06,671 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1179 transitions. Word has length 25 [2021-06-05 03:41:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,671 INFO L482 AbstractCegarLoop]: Abstraction has 361 states and 1179 transitions. [2021-06-05 03:41:06,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1179 transitions. [2021-06-05 03:41:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:06,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:06,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:06,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-06-05 03:41:06,671 INFO L430 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:06,671 INFO L82 PathProgramCache]: Analyzing trace with hash 769289243, now seen corresponding path program 719 times [2021-06-05 03:41:06,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:06,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802783779] [2021-06-05 03:41:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802783779] [2021-06-05 03:41:06,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802783779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834629154] [2021-06-05 03:41:06,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,770 INFO L87 Difference]: Start difference. First operand 361 states and 1179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,813 INFO L93 Difference]: Finished difference Result 488 states and 1563 transitions. [2021-06-05 03:41:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,814 INFO L225 Difference]: With dead ends: 488 [2021-06-05 03:41:06,814 INFO L226 Difference]: Without dead ends: 313 [2021-06-05 03:41:06,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-06-05 03:41:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-06-05 03:41:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 3.1378205128205128) internal successors, (979), 312 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 979 transitions. [2021-06-05 03:41:06,818 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 979 transitions. Word has length 25 [2021-06-05 03:41:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,818 INFO L482 AbstractCegarLoop]: Abstraction has 313 states and 979 transitions. [2021-06-05 03:41:06,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 979 transitions. [2021-06-05 03:41:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-05 03:41:06,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:41:06,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:41:06,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-06-05 03:41:06,819 INFO L430 AbstractCegarLoop]: === Iteration 725 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:41:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:41:06,819 INFO L82 PathProgramCache]: Analyzing trace with hash 151765885, now seen corresponding path program 720 times [2021-06-05 03:41:06,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:41:06,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952307570] [2021-06-05 03:41:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:41:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:41:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:41:06,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:41:06,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952307570] [2021-06-05 03:41:06,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952307570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:41:06,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:41:06,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:41:06,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327622640] [2021-06-05 03:41:06,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:41:06,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:41:06,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:41:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:41:06,916 INFO L87 Difference]: Start difference. First operand 313 states and 979 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:41:06,942 INFO L93 Difference]: Finished difference Result 312 states and 978 transitions. [2021-06-05 03:41:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:41:06,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-05 03:41:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:41:06,942 INFO L225 Difference]: With dead ends: 312 [2021-06-05 03:41:06,942 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 03:41:06,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:41:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 03:41:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 03:41:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 03:41:06,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-06-05 03:41:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:41:06,942 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 03:41:06,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:41:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 03:41:06,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 03:41:06,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable724 [2021-06-05 03:41:06,944 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 03:41:06,946 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:41:06 BasicIcfg [2021-06-05 03:41:06,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:41:06,946 INFO L168 Benchmark]: Toolchain (without parser) took 149828.31 ms. Allocated memory was 337.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 317.0 MB in the beginning and 866.4 MB in the end (delta: -549.4 MB). Peak memory consumption was 819.4 MB. Max. memory is 16.0 GB. [2021-06-05 03:41:06,947 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 337.6 MB. Free memory was 318.1 MB in the beginning and 318.0 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:41:06,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 337.6 MB. Free memory was 317.0 MB in the beginning and 315.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:41:06,947 INFO L168 Benchmark]: Boogie Preprocessor took 15.01 ms. Allocated memory is still 337.6 MB. Free memory was 315.5 MB in the beginning and 314.6 MB in the end (delta: 918.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:41:06,947 INFO L168 Benchmark]: RCFGBuilder took 200.40 ms. Allocated memory is still 337.6 MB. Free memory was 314.6 MB in the beginning and 304.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 03:41:06,947 INFO L168 Benchmark]: TraceAbstraction took 149581.59 ms. Allocated memory was 337.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 303.6 MB in the beginning and 866.4 MB in the end (delta: -562.8 MB). Peak memory consumption was 806.8 MB. Max. memory is 16.0 GB. [2021-06-05 03:41:06,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 337.6 MB. Free memory was 318.1 MB in the beginning and 318.0 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 337.6 MB. Free memory was 317.0 MB in the beginning and 315.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.01 ms. Allocated memory is still 337.6 MB. Free memory was 315.5 MB in the beginning and 314.6 MB in the end (delta: 918.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 200.40 ms. Allocated memory is still 337.6 MB. Free memory was 314.6 MB in the beginning and 304.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 149581.59 ms. Allocated memory was 337.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 303.6 MB in the beginning and 866.4 MB in the end (delta: -562.8 MB). Peak memory consumption was 806.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 149455.7ms, OverallIterations: 725, TraceHistogramMax: 1, EmptinessCheckTime: 1563.2ms, AutomataDifference: 50562.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 461.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60270 SDtfs, 75844 SDslu, 133269 SDs, 0 SdLazy, 25766 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15221.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5775 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 5045 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 75919.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred in iteration=0, InterpolantAutomatonStates: 5775, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27967.0ms AutomataMinimizationTime, 725 MinimizatonAttempts, 806803 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 206.1ms SsaConstructionTime, 437.2ms SatisfiabilityAnalysisTime, 66103.0ms InterpolantComputationTime, 18125 NumberOfCodeBlocks, 18125 NumberOfCodeBlocksAsserted, 725 NumberOfCheckSat, 17400 ConstructedInterpolants, 0 QuantifiedInterpolants, 425019 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 725 InterpolantComputations, 725 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...